Introductory Forensic Science

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1 Lesson 0: Course Introduction Video 05:08

Introduces topics of forensic science including fingerprints, trace analysis, drug analysis, arson, explosives, serology, DNA, questioned documents, and bloodstain patterns. In addition, specific science topics will be addressed such as matter and properties, significant figures, chemical reactions, organic versus inorganic compounds, spectroscopy, mass spectrometry, chromatography, and electrophoresis.

This is an excellent and fun option for someone needing a science course. It is a wonderful alternative to traditional physical science, chemistry, physics, or biology courses. The student will learn some chemistry, physics, and biology; and then immediately see how the science is applied in the profession of forensic science. Although the course cannot replace the rigor of a traditional science course to develop a solid foundation for a student interested in becoming a scientist, it can serve as an introduction to science through forensic application. In addition, because many "advanced" science topics are introduced (i.e., chromatography, electrophoresis, spectroscopy, and mass spectrometry) it can also complement the studies of students greatly interested in science.

The course contains 40 lessons with each lesson having a video (~20 min), an accompanying PowerPoint file, worksheet, and review video. There are also 8 quizzes, a mid-term and final exam. In addition, 50+ short bonus videos are available showing physical evidence, techniques, and chemical instrumentation of the forensic scientist. This is a meager attempt to bring the laboratory to the student by making available videos I made years ago when I had access to a forensic laboratory.

2 Lesson #1: Introduction to Forensic Science 22:30

Picture of Lesson #1: Introduction to Forensic Science

Definition and history of forensic science including major contributors to the develpment of forensic science.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

3 Lesson #1: Introduction to Forensic Science Review of Worksheet 05:43

Definition and history of forensic science including major contributors to the develpment of forensic science.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

4 Lesson #2: The Crime Laboratory 24:21

Picture of Lesson #2: The Crime Laboratory

The history and organization of a crime laboratory.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Document" tab for this lesson.

5 Lesson #2: The Crime Laboratory Review of Worksheet 08:52

The history and organization of a crime laboratory.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

6 Lesson #3: The Crime Scene 19:03

Picture of Lesson #3: The Crime Scene

The definition, processing, and legal issues of a crime scene.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

7 Lesson #3: The Crime Scene Review of Worksheet 09:27

The definition, processing, and legal issues of a crime scene.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

8 Lesson #4: Physical Evidence 27:10

Picture of Lesson #4: Physical Evidence

Physical evidence definition, identification, and comparison analyses.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

9 Lesson #4: Physical Evidence Review of Worksheet 06:40

Physical evidence definition, identification, and comparison analyses.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

10 Lesson #5: Matter 21:59

Picture of Lesson #5: Matter

Lesson #5: Matter, mass, physical and chemical properties, elements, and compounds.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

11 Lesson #5: Matter Review of Worksheet 07:14

Lesson #5: Matter, mass, physical and chemical properties, elements, and compounds.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.
  2. Answer the 10 quiz questions from lectures 1-5 found in the "Tests" tab of this lesson.

12 Lesson #6: Bonds and Chemical Reactions 24:11

Picture of Lesson #6: Bonds and Chemical Reactions

Introduces atoms, ions, chemical bonds, chemical formula, and chemical equations/reactions.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

13 Lesson #6: Bonds and Chemical Reactions Review of Worksheet 10:42

Introduces atoms, ions, chemical bonds, chemical formula, and chemical equations/reactions.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

14 Lesson #7: Measurements 20:16

Picture of Lesson #7: Measurements

Lesson #7: Measurements, precision, accuracy, units, and significant figures.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

15 Lesson #7: Measurements Review of Worksheet 09:24

Lesson #7: Measurements, precision, accuracy, units, and significant figures.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

16 Lesson #8: Scientific Notation 18:22

Picture of Lesson #8: Scientific Notation

Lesson #8: Scientific notation, temperature, and density

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

17 Lesson #8: Scientific Notation Review of Worksheet 11:30

Lesson #8: Scientific notation, temperature, and density

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

18 Lesson #9: Forensic Glass Analysis 31:18

Picture of Lesson #9: Forensic Glass Analysis

Lesson #9: An introductdion to forensic glass analysis including electromagnetic radiation, refractive index, birefringence, and glass analysis.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following videos in the "Resources" tab for the entire course.
    • Glass Density Experiment
    • Radial Fracture Direction of Impact
    • Refractive Index of Glass is Greater
    • Refractive Index of Solvent is Greater
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

19 Bonus Video: Glass Density Experiment 02:47

A glass density experiment showing the differing densities of two glass samples. The more dense glass sample sinks in the liquid, and the less dense glass sample floats.

20 Bonus Video: Radial Fracture Direction of Impact 00:23

A short video showing a radial fracture with a direction of impact right to left due to the fracture lines forming right angles on the left side do the glass.

21 Bonus Video: Refractive Index of Glass is Greater 00:20

A short video showing the refractive index of glass is greater than the solvent due to the Becke line moving into the glass as the objective is moved away from the sample.

22 Bonus Video: Refractive Index of Solvent is Greater 00:18

A short video showing the refractive index of the solvent is greater than the glass due to the Becke line moving into the solvent as the objective is moved away from the sample.

23 Lesson #9: Forensic Glass Analysis Review of Worksheet 09:43

Lesson #9: An introductdion to forensic glass analysis including electromagnetic radiation, refractive index, birefringence, and glass analysis.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

24 Lesson #10: Forensic Soil Analysis 21:15

Picture of Lesson #10: Forensic Soil Analysis

Lesson #10: An introduction to forensic soil analysis including a discussion of acids, bases, pH, and soil analysis techniques.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following video as part of this lesson.
    • Soil Analysis Density Experiment
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

25 Bonus Video: Soil Analysis Density Experiment 03:58

A short video showing the preparation of a density gradient with various solve mixtures. Two soil samples are compared in equivalent density gradients to determine density profiles.

26 Lesson #10: Forensic Soil Analysis Review of Worksheet 10:36

Lesson #10: An introduction to forensic soil analysis including a discussion of acids, bases, pH, and soil analysis techniques.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.
  2. Answer the 10 quiz questions from lectures 6-10 found in the "Tests" tab of this lesson.

27 Lesson #11: Organic Compounds 22:14

Picture of Lesson #11: Organic Compounds

An introduction to organic compounds including molecular polarity and intermolecular forces.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documentst" tab for this lesson.

28 Lesson #11: Organic Compounds Review of Worksheet 08:47

An introduction to organic compounds including molecular polarity and intermolecular forces.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

29 Lesson #12: Chromatography 19:28

Picture of Lesson #12: Chromatography

Lesson #12: A discussion of the degrees of mixing of two compounds as an introduction to the application of intermolecular forces in the process of chromatography. Thin layer chromatography is introduced.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

30 Lesson #12: Chromatography Review of Worksheet 09:44

Lesson #12: A discussion of the degrees of mixing of two compounds as an introduction to the application of intermolecular forces in the process of chromatography. Thin layer chromatography is introduced.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

31 Lesson #13: High Performance Liquid Chromatography 16:00

Picture of Lesson #13: High Performance Liquid Chromatography

Lesson #13: An introduction to a specific separation technique called high performance liquid chromatography and associated separation resolution and efficiency.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following video as part of this lesson.
    • Operation of an HPLC
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

32 Bonus Video: Operation of an HPLC 02:22

A short video showing someone operating a high performance liquid chromatograph (HPLC).

33 Lesson #13: High Performance Liquid Chromatography Review of Worksheet 05:44

Lesson #13: An introduction to a specific separation technique called high performance liquid chromatography and associated separation resolution and efficiency.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

34 Lesson #14: Gas Chromatography 15:57

Picture of Lesson #14: Gas Chromatography

Lesson #14: An introduction to gas chromatography separation techniques including temperature programing and injection of sample.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following video as part of this lesson.
    • Operation of a GC/MS
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

35 Bonus Video: Operation of a GC/MS 03:06

A short video showing someone operating a gas chromatograph instrument connected to a mass spectrometer.

36 Lesson #14: Gas Chromatography Review of Worksheet 06:03

Lesson #14: An introduction to gas chromatography separation techniques including temperature programing and injection of sample.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

37 Lesson #15: Electrophoresis 13:25

Picture of Lesson #15: Electrophoresis

Lesson #15: An introduction to electrophoretic separation techniques including general electrophoresis, gel electrophoresis, and electroosmosis.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

38 Lesson #15: Electrophoresis Review of Worksheet 09:29

Lesson #15: An introduction to electrophoretic separation techniques including general electrophoresis, gel electrophoresis, and electroosmosis.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.
  2. Answer the 10 quiz questions from lectures 11-15 found in the "Tests" tab of this lesson.

39 Lesson #16: Spectrophotometry 20:43

Picture of Lesson #16: Spectrophotometry

Lesson #16: A discussion of electromagnetic radiation, the Borh model of an atom, energy levels, atomic orbitals, photons, and molecular orbitals.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

40 Lesson #16: Spectrophotometry Review of Worksheet 09:07

Lesson #16: A discussion of electromagnetic radiation, the Borh model of an atom, energy levels, atomic orbitals, photons, and molecular orbitals.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check worksheet answers.

41 Lesson #17: UV-vis Spectrophotometry 13:41

Picture of Lesson #17: UV-vis Spectrophotometry

Lesson #17: An introduction to Uv-vis spectrophotometry including chromophores, complementary colors, quantitative analysis, qualitative analysis, and Beer's Law.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following video as part of this lesson.
    • Operation of a UV-vis
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

42 Bonus Video: Operation of a UV-vis 02:37

A short video showing someone operating a UV-vis spectrophotometer.

43 Lesson #17: UV-vis Spectrophotometry Review of Worksheet 06:57

Lesson #17: An introduction to Uv-vis spectrophotometry including chromophores, complementary colors, quantitative analysis, qualitative analysis, and Beer's Law.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

44 Lesson #18: Infrared Spectrophotometry 12:26

Picture of Lesson #18: Infrared Spectrophotometry

Lesson #18: An introductory discussion of molecular energies, chemical bond vibrations, infrared absorbance spectra, and Fourier transform infrared spectrophotometry.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

45 Lesson #18: Infrared Spectrophotometry Review of Worksheet 08:56

Lesson #18: An introductory discussion of molecular energies, chemical bond vibrations, infrared absorbance spectra, and Fourier transform infrared spectrophotometry.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

46 Lesson #19: Mass Spectrometry 23:03

Picture of Lesson #19: Mass Spectrometry

Lesson #19: An introduction to atomic and molecular mass units, basic mass spectrometry, and mass spectra for the purpose of compound identification.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

47 Lesson #19: Mass Spectrometry Review of Worksheet 06:09

Lesson #19: An introduction to atomic and molecular mass units, basic mass spectrometry, and mass spectra for the purpose of compound identification.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

48 Lesson #20: Inorganic Analysis 09:44

Picture of Lesson #20: Inorganic Analysis

Lesson #20: Introduction to inorganic analysis including the classification of inorganic matter and the operation of inorganic instrumentation.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following video as part of this lesson.
    • Operation of a an AA
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

49 Bonus Video: Operation of an AA 02:52

A short video showing someone operating an atomic absorption spectrophotometer.

50 Lesson #20: Inorganic Analysis Review of Worksheet 05:29

Lesson #20: Introduction to inorganic analysis including the classification of inorganic matter and the operation of inorganic instrumentation.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.
  2. Answer the 10 quiz questions from lectures 16-20 found in the "Tests" tab of this lesson.

51 Mid-term Exam 59:59

Mid-term exam containing 50 test questions from lessons 1-20.

Complete this exam to move onto lessons 21-40.

This exam should take you 30-60 minutes to complete.

52 Lesson #21: Microscopy 16:28

Picture of Lesson #21: Microscopy

Lesson #21: An introduction to microscopy including the discussions of simple and compound microscopes, and the anatomy of a microscope.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

53 Lesson #21: Microscopy Review of Worksheet 06:09

Lesson #21: An introduction to microscopy including the discussions of simple and compound microscopes, and the anatomy of a microscope.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check worksheet answers.

54 Lesson #22: Types of Microscopes 18:59

Picture of Lesson #22: Types of Microscopes

Lesson #22: A discussion of the compound, stereo, comparison, polarized light, and electron microscopes.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following videos as part of this lesson.
    • Operation of a Stereomicroscope
    • Operation of a Polarized Light Microscope
    • Polarized Light Microscope Analysis of a Hair Sample
  4. Answer the workshet questions found in the "Documents" tab for this lesson.

55 Bonus Video: Operation of a Stereomicroscope 01:09

A short video showing someone operating a stereomicroscope.

56 Bonus Video: Operation of a Polarized Light Microscope 02:16

A short video showing someone operating a polarized light microscope for the analysis of a hair.

57 Bonus Video: Polarized Light Microscope Analysis of a Hair Sample 00:27

A short video showing the appearance of a hair sample under various settings of a polarized light microscope to determine optical properties.

58 Lesson #22: Types of Microscopes Review of Worksheet 06:00

Lesson #22: A discussion of the compound, stereo, comparison, polarized light, and electron microscopes.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

59 Lesson #23: Forensic Hair Analysis 23:35

Picture of Lesson #23: Forensic Hair Analysis

Lesson #23: An introduction to forensic hair analysis including a discussion of hair functionality, growth, structure, and comparisons.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following videos as part of this lesson.
    • Bat Hair
    • Cat Hair
    • Cow Hair
    • Dog Hair
    • Goat Hair
    • Horse Hair
    • Human Hair I
    • Human Hair II
    • Human Hair III
    • Muskrat Hair
    • Pig Hair
    • Rabbit Hair
    • Rat Hair
    • Sheep Hair
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

60 Bonus Video: Bat Hair 00:18

A short video showing the examination of bat hair with a biological compound microscope.

61 Bonus Video: Cat Hair 00:18

A short video showing the examination of cat hair with a biological compound microscope.

62 Bonus Video: Cow Hair 00:30

A short video showing the examination of cow hair with a biological compound microscope.

63 Bonus Video: Dog Hair 00:32

A short video showing the examination of dog hair with a biological compound microscope.

64 Bonus Video: Goat Hair 00:28

A short video showing the examination of goat hair with a biological compound microscope.

65 Bonus Video: Horse Hair 00:26

A short video showing the examination of horse hair with a biological compound microscope.

66 Bonus Video: Human Hair I 00:24

A short video showing the examination of human hair with a biological compound microscope.Notice the hair has very little medulla.

67 Bonus Video: Human Hair II 00:36

A short video showing the examination of human hair with a biological compound microscope.Notice the hair has a large amount of interrupted medulla.

68 Bonus Video: Human Hair III 00:40

A short video showing the examination of human hair with a biological compound microscope. Notice the hair has no medulla.

69 Bonus Video: Muskrat Hair 00:25

A short video showing the examination of muskrat hair with a biological compound microscope.

70 Bonus Video: Pig Hair 00:25

A short video showing the examination of pig hair with a biological compound microscope.

71 Bonus Video: Rabbit Hair 00:40

A short video showing the examination of rabbit hair with a biological compound microscope.

72 Bonus Video: Rat Hair 00:29

A short video showing the examination of rat hair with a biological compound microscope.

73 Bonus Video: Sheep Hair 00:22

A short video showing the examination of sheep hair with a biological compound microscope.

74 Lesson #23: Forensic Hair Analysis Review of Worksheet 05:35

Lesson #23: An introduction to forensic hair analysis including a discussion of hair functionality, growth, structure, and comparisons.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

75 Lesson #24: Forensic Fiber Analysis 22:39

Picture of Lesson #24: Forensic Fiber Analysis

Lesson #24: Introduction to types of natural and synthetic fibers, and a discussion of fiber identification and comparison techniques.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following videos as part of this lesson.
    • Acrylic Fibers
    • Cotton Fibers
    • Hemp Fibers
    • Jute Fibers
    • Linen Fibers
    • Nylon Fibers
    • Polyester Fibers
    • Rayon Fibers
    • Silk Fibers
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

76 Bonus Video: Acrylic Fibers 00:21

A short video showing the examination of acrylic fibers with a biological compound microscope.

77 Bonus Video: Cotton Fibers 00:31

A short video showing the examination of cotton fibers with a biological compound microscope.

78 Bonus Video: Hemp Fibers 00:40

A short video showing the examination of hemp fibers with a biological compound microscope.

79 Bonus Video: Jute Fibers 00:25

A short video showing the examination of jute fibers with a biological compound microscope.

80 Bonus Video: Linen Fibers 00:28

A short video showing the examination of linen fibers with a biological compound microscope.

81 Bonus Video: Nylon Fibers 00:15

A short video showing the examination of nylon fibers with a biological compound microscope.

82 Bonus Video: Polyester Fibers 00:23

A short video showing the examination of polyester fibers with a biological compound microscope.

83 Bonus Video: Rayon Fibers 00:11

A short video showing the examination of rayon fibers with a biological compound microscope.

84 Bonus Video: Silk Fibers 00:15

A short video showing the examination of silk fibers with a biological compound microscope.

85 Lesson #24: Forensic Fiber Analysis Review of Worksheet 07:42

Lesson #24: Introduction to types of natural and synthetic fibers, and a discussion of fiber identification and comparison techniques.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

86 Lesson #25: Forensic Paint Analysis 22:11

Picture of Lesson #25: Forensic Paint Analysis

Lesson #25: Introduction to types of paint, paint characteristics, identification, and comparison techniques.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

87 Lesson #25: Forensic Paint Analysis Review of Worksheet 06:57

Lesson #25: Introduction to types of paint, paint characteristics, identification, and comparison techniques.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.
  2. Answer the 10 quiz questions from lectures 21-25 found in the "Tests" tab of this lesson.

88 Lesson #26: Drug Introduction 19:53

Picture of Lesson #26: Drug Introduction

Lesson #26: An introduction to drugs, drug dependence, drugs as physical evidence, and drugs and the law.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

89 Lesson #26: Drug Introduction Review of Worksheet 08:43

Lesson #26: An introduction to drugs, drug dependence, drugs as physical evidence, and drugs and the law.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

90 Lesson #27: Drug Categories 22:22

Picture of Lesson #27: Drug Categories

Lesson #27: In introduction to drug categories including narcotics, hallucinogens, depressants, stimulants, and designer drugs.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

91 Lesson #27: Drug Categories Review of Worksheet 07:28

Lesson #27: In introduction to drug categories including narcotics, hallucinogens, depressants, stimulants, and designer drugs.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

92 Lesson 28: Drug Analysis 18:38

Picture of Lesson 28: Drug Analysis

Lesson 28: An introduction to presumptive drug identification including several color and microcrystalline tests.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following videos as part of this lesson.
    • Marijuana Cystolithic Hairs
    • Marquis Test for Opiates
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

93 Bonus Video: Marijuana Cystolytic Hairs 00:53

An examinations of marijuana leaves under a stereomicroscope showing the presence of cystolythic hairs.

94 Bonus Video: Marquis Test for Opiates 01:29

A short video showing the use of the Marquis color test for the presumptive identification of an opiate. Notice the purple/violet color.

95 Lesson 28: Drug Analysis Review of Worksheet 06:19

Lesson 28: An introduction to presumptive drug identification including several color and microcrystalline tests.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

96 Lesson #29: Drug Analysis II 18:16

Picture of Lesson #29: Drug Analysis II

Lesson #29: Introduction to confirmatory drug identification including FTIR with ATR, GC/MS, identification of marijuana, and quantitative analysis.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following video as part of this lesson.
    • Operation of an FTIR with an ATR
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

97 Bonus Video: Operation of an FTIR with an ATR 01:31

A short video showing someone operating an FTIR instrument with an ATR crystal.

98 Lesson #29: Drug Analysis II Review of Worksheet 09:45

Lesson #29: Introduction to confirmatory drug identification including FTIR with ATR, GC/MS, identification of marijuana, and quantitative analysis.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

99 Lesson #30: Fingerprint Introduction 17:42

Picture of Lesson #30: Fingerprint Introduction

Lesson #30: An introduction to fingerprints including fingerprint identification history, friction ridge skin, and fingerprint residue.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

100 Lesson #30: Fingerprint Introduction Review of Worksheet 04:54

Lesson #30: An introduction to fingerprints including fingerprint identification history, friction ridge skin, and fingerprint residue.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.
  2. Answer the 10 quiz questions from lectures 26-30 found in the "Tests" tab of this lesson.

101 Lesson #31: Fingerprint Ridge Patterns 20:01

Picture of Lesson #31: Fingerprint Ridge Patterns

Lesson #31: Introduction to general fingerprint ridge patterns (arches, loops, and whorls), fingerprint minutiae, and the integrated automated fingerprint identification system.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

102 Lesson #31: Fingerprint Ridge Patterns Review of Worksheet 05:58

Lesson #31: Introduction to general fingerprint ridge patterns (arches, loops, and whorls), fingerprint minutiae, and the integrated automated fingerprint identification system.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

103 Lesson #32: Fingerprint Development 17:44

Picture of Lesson #32: Fingerprint Development

Lesson #32: An introduction to fingerprint development techniques including iodine fuming, ninhydrin, superglue fuming, dusting, and crystal violet.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following videos as part of this lesson.
    • Crystal Violet Fingerprint Development
    • Iodine Fuming Fingerprint Development
    • Ninhydrin Fingerprint Development
    • Superglue Fuming Fingerperint Development
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

104 Bonus Video: Crystal Violet Fingerprint Development 02:09

A short video showing the development of finger prints using crystal violet.

105 Bonus Video: Iodine Fuming Fingerprint Development 02:50

A short video showing the development of fingerprints using iodine fuming.

106 Bonus Video: Ninhydrin Fingerprint Development 03:10

A short video showing the development of fingerprints using ninhydrin.

107 Bonus Video: Superglue Fuming Fingerprint Development 03:03

A short video showing the development of fingerprints using superglue fuming.

108 Lesson #32: Fingerprint Development Review of Worksheet 05:28

Lesson #32: An introduction to fingerprint development techniques including iodine fuming, ninhydrin, superglue fuming, dusting, and crystal violet.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

109 Lesson #33: Forensic Serology 22:01

Picture of Lesson #33: Forensic Serology

Lesson #33: An introduction to forensic serology including the analysis of blood and semen.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following videos as part of this lesson.
    • Leucomalachite Green Blood Identificaiton
    • ortho-Tolidine Blood Identification
    • Red Blood Cells
    • Dyed Sperm Cells
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

110 Bonus Video: Leucomalachite Green Blood Identificaiton 01:30

A short video showing the use of leucomalachite green for the identification of blood. Notice the appearance of the blue-green color.

111 Bonus Video: ortho-Tolidine Test Blood Identification 01:30

A short video showing the use of ortho-tolidine for the purpose of a presumptive blood identification. Notice the appearance of the blue-green color.

112 Bonus Video: Red Blood Cells 00:16

A short video showing the appearance of red blood cells under a biological compound microscope.

113 Bonus Video: Dyed Sperm Cells 00:19

A short video showing the appearance of dyed sperm cells under a biological compound microscope. Notice the heads of the sperm cells are dyed.

114 Lesson #33: Forensic Serology Review of Worksheet 06:53

Lesson #33: An introduction to forensic serology including the analysis of blood and semen.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

115 Lesson #34: Bloodstain Pattern Analysis 20:43

Picture of Lesson #34: Bloodstain Pattern Analysis

Lesson #34: An introduction to bloodstain pattern analysis including blood droplets, swipes, wipes, impact stains, and crime scene reconstruction.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

116 Lesson #34: Bloodstain Pattern Analysis Review of Worksheet 07:03

Lesson #34: An introduction to bloodstain pattern analysis including blood droplets, swipes, wipes, impact stains, and crime scene reconstruction.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

117 Lesson #35: DNA Introduction 18:24

Picture of Lesson #35: DNA Introduction

Lesson #35: An introduction to DNA including a discussion of nucleotides, chromosomes, the purpose of DNA, and DNA collection.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

118 Lesson #35: DNA Introduction Review of Worksheet 06:11

Lesson #35: An introduction to DNA including a discussion of nucleotides, chromosomes, the purpose of DNA, and DNA collection.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.
  2. Answer the 10 quiz questions from lectures 31-35 found in the "Tests" tab of this lesson.

119 Lesson #36: DNA Analysis 22:06

Picture of Lesson #36: DNA Analysis

Lesson #36: An introduction to DNA analysis including DNA replication, PCR, tandem repeats, RFLP, short tandem repeats, and mitochondrial DNA.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

120 Lesson #36: DNA Analysis Review of Worksheet 12:09

Lesson #36: An introduction to DNA analysis including DNA replication, PCR, tandem repeats, RFLP, short tandem repeats, and mitochondrial DNA.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

121 Lesson #37: Forensic Arson Investigation 29:05

Picture of Lesson #37: Forensic Arson Investigation

Lesson #37: An introduction to forensic arson investigation including the chemistry of fire, arson evidence collection, arson evidence analysis, and weathering.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

122 Lesson #37: Forensic Arson Investigation Review of Worksheet 07:16

Lesson #37: An introduction to forensic arson investigation including the chemistry of fire, arson evidence collection, arson evidence analysis, and weathering.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

123 Lesson #38: Explosives Introduction 20:36

Picture of Lesson #38: Explosives Introduction

Lesson #38: An introduction to explosives including a discussing low explosives, high explosives, and explosive evidence collection.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

124 Lesson #38: Explosives Introduction Review of Worksheet 08:24

Lesson #38: An introduction to explosives including a discussing low explosives, high explosives, and explosive evidence collection.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet questions.

125 Lesson #39: Explosive Analysis 22:11

Picture of Lesson #39: Explosive Analysis

Lesson #39: An introduction to the forensic analysis of explosives including analysis techniques for low explosives, high explosives, and gunshot residue.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Watch the following videos as part of this lesson.
    • Nitrate Color Test
    • Carbon Flame Test
    • Lead Color Test
    • Nitrite Color Test
    • Nitrocellulose Precipitate Test
    • Potassium Flame Test
    • TNT Color Test
  4. Answer the worksheet questions found in the "Documents" tab for this lesson.

126 Bonus Video: Nitrate Color Test 04:04

A short video showing the use of diphenylphenol for the determination of nitrate presence.

127 Bonus Video: Carbon Flame Test 00:42

A short video showing the presence of carbon due to the smoldering of the suspect carbon material on the end of a metal spatula after being placed in a flame.

128 Bonus Video: Lead Color Test 02:25

A short video showing the use of sodium rhodizonate to identify the presence of lead.

129 Bonus Video: Nitrite Color Test 04:02

A short video showing the use of the Griess test to identify the presence of nitirites.

130 Bonus Video: Nitrocellulose Precipitate Test 01:47

A short video showing the precipitate of nitrocellulose in water.

131 Bonus Video: Potassium Flame Test 00:27

A short video showing the presence of potassium as indicated by the violet flame.

132 Bonus Video: TNT Color Test 00:51

A short video showing the use of potassium hydroxide in methanol for the presumptive identification of TNT. Notice the appearance of the red/orange color.

133 Lesson #39: Explosive Analysis Review of Worksheet 07:22

Lesson #39: An introduction to the forensic analysis of explosives including analysis techniques for low explosives, high explosives, and gunshot residue.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.

134 Lesson #40: Questioned Documents 19:56

Picture of Lesson #40: Questioned Documents

Lesson #40: An introduction to questioned document analysis including handwriting, signatures, obliterations, ink, and paper analysis.

Assignments:

  1. Review the PowerPoint file found in "Documents" tab for this lesson.
  2. Watch the video found in the "Video" tab for this lesson.
  3. Answer the worksheet questions found in the "Documents" tab for this lesson.

135 Lesson #40: Questioned Documents Review of Worksheet 06:17

Lesson #40: An introduction to questioned document analysis including handwriting, signatures, obliterations, ink, and paper analysis.

Assignments:

  1. Watch the video found in the "Video" tab for this lesson to check your worksheet answers.
  2. Answer the 10 quiz questions from lectures 36-40 found in the "Tests" tab of this lesson.

136 Final Exam 59:59

Final exam containing 50 test questions from lessons 21-40.

This exam should take you 30-60 minutes to complete.

Course Description

Introduces many forensic science topics including fingerprints, hairs, fibers, glass, soil, drug analysis, arson, explosives, serology, DNA, questioned documents, and bloodstain patterns. In addition, specific science topics are addressed such as significant figures, matter and properties, chemical reactions, organic versus inorganic compounds, spectroscopy, mass spectrometry, chromatography, and electrophoresis. Please refer to "Course Topics" below for a detailed list.

This course an excellent and fun option for someone needing a science course. The student will learn related chemistry, physics, and biology topics; and then immediately see how the science is applied in the profession of forensic science. For the student interested in becoming a scientist, this course cannot replace the rigor of a traditional science course to develop a solid foundation; however, it can serve as an introduction to science through forensic application for any student. Also, the many traditionally "advanced" science topics introduced (i.e., chromatography, electrophoresis, spectroscopy, and mass spectrometry) can complement the studies of even the most serious science student.

Course Goals

  • Introduce the student to science as a practical (and necessary) means for solving crimes
  • Provide a brief and preliminary introduction to many foundational and traditionally advanced science topics as related to forensic science
  • Develop and demonstrate the immediate application of science
  • Instill appreciation for, and interest in science

Target audience

High school students (i.e., 9th - 12th grade). As a suggestion, students will have completed an introductory physical science course in grades 6 - 8 and have developed basic math skills. Although the course introduces many foundational and traditionally advanced science topics, it does so in a rudimentary manner allowing for a basic (rather than comprehensive) understanding of forensic applications. This is reflected in the level and detail of the practice lesson questions and exams.

Course Content

  • 40 lessons
  • 40 instructional videos (~20 min each)
  • 40 PowerPoint files
  • 40 review worksheets (10 questions per lesson)
  • 40 review videos explaining the worksheets
  • 8 quizzes (one quiz after each 5 lessons, 10 questions each)
  • 1 midterm exam (50 questions from lessons 1-20)
  • 1 final exam (50 questions from lessons 21-40)
  • 50+ short bonus videos showing physical evidence, techniques, and chemical instrumentation of the forensic scientist
    • This is a meager attempt to bring the laboratory to the student by making available videos I made years ago when I had access to a forensic laboratory.

Course Topics

  • Introduction to forensic science and its history
    • History and services of a crime laboratory
    • Responsibilities of a forensic scientist
    • Definition, processing, and legal issues of a crime scene
    • Definition, identification, comparison, and analysis of physical evidence
  • Science Basics
    • Scientific laws and theories
    • States of matter
    • Physical and chemical changes
    • Pure substances (i.e., compounds and elements)
    • Atoms and ions
    • Chemical bonds
    • Chemical formula
    • Chemical equations
    • Precision and accuracy
    • Significant figures and units
    • Scientific notation
    • Temperature
    • Density
  • Electromagnetic spectrum
    • Wavelength, frequency, and velocity of waves
    • Refractive index
    • Crystalline and amorphous solids
    • Birefringence
  • Glass structure and types
    • Analysis of glass refractive index (Becke line), density, and fracture patterns
  • Acids and bases
    • Conjugate acid/base pairs
    • Autoprotolysis of water
    • pH scale
  • Analysis of soil pH, density distribution, and particle size distribution
  • Definition of organic compounds
    • Single, double, and triple bonds
    • Skeletal structures of organic molecules
    • Molecular polarity
    • Intermolecular forces
    • Degrees of compound mixing
  • Chromatography
    • Thin-layer chromatography and Rf values
    • High performance liquid chromatography (HPLC)
    • Normal- and reversed-phase HPLC
    • Isocratic and gradient elution
    • Chromatograms and retention time
    • Separation resolution and efficiency
    • Gas chromatography (GC)
    • Temperature programming
    • Fundamental differences between HPLC and GC
  • Electrophoresis
    • Slab-gel electrophoresis
    • Capillary electrophoresis
    • Electroosmosis
  • Atomic emission spectra
    • Bohr model of an atom
    • Atomic orbitals
    • Photons
    • Molecular orbitals
  • UV-vis spectrophotometry
    • Monochromator
    • Chromophore
    • Complementary colors
    • Qualitative and quantitative analysis
    • Absorbance spectra
    • Beer's law
  • Fourier transform infrared spectrophotometry (FTIR)
    • Molecular energies
    • Bond vibrations
    • Absorbance and transmittance spectra
  • Mass spectrometry
    • Atomic and molecular mass
    • Mass spectra (ionization sources and fragmentation patterns)
    • Gas chromatography/mass spectrometry (GC/MS)
  • Inorganic compounds
    • Atomic emission and absorbance spectra 
    • Inorganic analysis (e.g., atomic absorbance and inductively coupled plasma)
  • Microscopy
    • Simple microscope
    • Types of light-matter interactions
    • Real and virtual images
    • Simple microscope
    • Compound microscope
    • Magnification, aberrations, and resolution
    • Components of a microscope
    • Stereomicroscope
    • Comparison microscope
    • Polarized light microscope
    • Scanning electron microscope with X-ray detection
    • FTIR microscope
  • Hair
    • Functionality of hair
    • Hair growth
    • Hair structure
    • Hair comparison analysis
  • Fibers
    • Natural fibers
    • Synthetic fibers
    • Fiber identification analysis
    • Fiber comparison analysis
  • Paint
    • Components of paint
    • Automobile paint
    • Powder coating
    • Paint comparison and identification analyses
  • Drugs
    • Classification of illicit drugs
    • Drug physical evidence
    • Drug dependence
    • Scheduled drugs
    • Cutting agents
    • Narcotic drugs (e.g., heroin, morphine, and oxycodone)
    • Hallucinogens (e.g., mescaline, LSD, and marijuana)
    • Depressants (e.g., alcohol, benzodiazepines, and barbiturates)
    • Stimulants (e.g., amphetamines and cocaine)
    • Designer drugs
    • Presumptive drug color tests (e.g., Scott's, Marquis, and Duquenois-Levine)
    • Microcrystalline tests
    • ATR-FTIR analysis of drugs
    • Moles and molarity
    • GC/MS analysis of drugs
    • Marijuana identification (i.e., botanical features and TLC)
  • Fingerprints
    • Fingerprint history
    • Anthropometry
    • Friction ridge skin
    • Fingerprint residue
    • Latent and visible prints
    • Friction ridge skin general patterns (i.e., arches, loops, and whorls)
    • Fingerprint minutiae
    • Integrated Automated Fingerprint Identification System
    • Fingerprint development techniques (e.g., powders, oblique lighting, ninhydrin, superglue fuming, and iodine fuming)
  • Forensic Serology
    • Composition of blood
    • Blood types
    • Heme and hemoglobin
    • Blood identification techniques (e.g., Kastle-Meyer)
    • Semen composition and spermatozoa
    • Semen identification analyses (e.g., prostate specific antigen and acid phosphotase)
  • Bloodstain pattern analysis
    • Blood droplet patterns
    • Pools, wipes, swipes, skeletonization, pattern transfers, and cast-off patterns
    • Blood spatter
    • Determining directionality
    • Determining angle of impact
    • Reconstruction
  • DNA
    • Nucleotides and nucleosides
    • Base pairs and genes
    • Chromosomes
    • Proteins
    • Locus, allele, genotype and phenotype
    • DNA physical evidence
    • DNA replication and the polymerase chain reaction
    • Restriction fragment length polymorphisms (RFLP)
    • Short tandem repeats (STR)
    • DNA analysis
    • Combined DNA index system (CODIS)
    • Mitochondrial DNA
  • Arson
    • Chemistry of fire
    • Combustion terms (e.g., ignition temperature, flammable range, pyrolysis, and flash point)
    • Arson crime scene investigation
    • Arson headspace analysis (GC)
    • Weathering and pyrolysis products
  • Explosives
    • Mechanical and chemical explosives
    • Low explosives and analysis techniques (e.g., diphenylamine)
    • High explosives and analysis techniques (e.g., Nessler reagent)
    • Improvised explosive devices (IEDs)
    • Gunshot residue and analysis techniques (e.g., Griess test)
  • Questioned documents
    • Handwriting analysis and exemplars
    • Signatures
    • Erasures, obliterations, and indentions
    • Ink and paper analyses
  • Teacher: David
  • Areas of expertise: Analytical chemistry (chromatography, electrophoresis, and mass spectrometry) and forensic science
  • Education: PhD in Analytical Chemistry
  • Interests: Education, biking, and gardening
  • Skills: Chemical instrumentation
  • Associations: American Chemical Society
  • Issues I care about: Education, peace, personal satisfaction, and unity

"Do your best and let the rest, rest."

Answer Keys

This PDF document contains all the multiple -choice questions and answers to all lesson worksheets. In addition, it contains questions and answers to all quizzes, mid-term and final exams.

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