forensic science - the teaching portfolio of rachel...
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Forensic ScienceLesson Plans and Teacher Resources
Sarah Jane Cahill s3201289
Adam Roche s3303759
Rachel Zammit s3300669
ContentsIntroduction
Rational
Intergrading the Sciences
Unit Plan
Introduction to Forensic Science
Introduction to Blood Splatter Analysis
Blood Splatter Practical
Blood Types and Introduction to DNA
Fingerprints
Fingerprint Practical – Powders
Fingerprint Practical –Chemical (Ninhydrin and Iodine Fuming)
Fingerprint Practical –Chemical (Gentian violet)
Determination of an unknown substance
Unknown Substance Practical
Thin Layer Chromatography Practical
Assessment/Exam
Appendix 1
Appendix 2
Appendix 3
Appendix 4
Appendix 5
Appendix 6
Appendix 7
IntroductionSolving mysteries is a challenge many students enjoy and forensic science is used to examine evidence which in turn solve crimes. Students are commonly exposed to criminal situations in the media, both fictional and real, and are aware that forensic science is used to solve crimes. As many current television programs use the science of forensics to develop their dramas. However, students may not be aware of the techniques involved. This unit is designed to show students how forensic investigators apply scientific skills and processes in a problem-solving capacity.
The forensic science unit contains suggested essential understandings, activities, assignments, investigations, and assessments for curriculum implementation. Teachers can decide which essential understandings will allow them to address the specific learning outcomes.
RationalThe Forensic Science unit was developed to allow students to integrate a number of scientific disciplines and to practise a variety of scientific skills and processes, including making comparisons, classifications, observations, measurements, and predictions, as well as manipulating variables, and interpreting data. The unit consists of individual activities, each of which includes teacher and student references. The unit can be designed to include any activities teachers (or students) may wish to incorporate into their forensics learning experience. The student learning activities are highly variable, and can be structured and sequenced according to student interest, available materials, and local resources. Solving a crime requires the use of critical thinking skills that will integrate several science disciplines and be useful across the curriculum.
Integrating the Sciences As students explore the topic of forensic sciences, many sciences may naturally be integrated.The following table outlines suggested essential understandings and their possible connections to the major science disciplines.
Essential UnderstandingsLesson Biology Chemistry Physics Mathematics
Fingerprinting Fingerprint residue
Chemical reactions
Chemical Spot Test
Chemical reactions, Solubility
Chromatography Polarity,Solubility
CalculateRf values
Blood Analysis Blood typing Motion, Velocity Measuring,Graph
Unit PlanLesson Title Aim/Objective Assessment
1 Introduction to Forensic Science
To find out what the students already know about forensic science and what areas of forensic science they are interested in
Video review/ Homework sheet
2 Introduction to Blood Splatter Analysis
To give students an understanding of what blood splatter is and what information it can provide in solving a crime
Answer questions from slideshow/ Start Blood
group Assignment3 Blood Splatter
PracticalTo investigate how height and surface can affect blood splatter patterns
Science Report
4 Blood Types and Introduction to DNA
Students will build on their oral presentation skills and learn about DNA
Blood type group assignment and
Oral presentation5 Fingerprints To assess and increase students knowledge of the
human fingerprint and relate this to forensic science-
6 Fingerprint Practical - Powders
To show students the advancement in latent fingerprint powders since the early 1990’s
Science Report
7 Fingerprint Practical –Chemical (Ninhydrin and Iodine Fuming)
Students will preform a practical on latent fingerprints. They will use ninhydrin and iodine fuming techniques
Science Report
8 Fingerprint Practical –Chemical (Gentian
violet)
To show students how some chemicals are capable of revealing latent fingerprints
Science Report
9 Unknown Substance To introduce students to the different techniques used to identify an unknown substance and why it might be needed as part of a forensic science investigation
-
10 Unknown Substance Practical
Students are to preform a series of tests to identify an unknown substance
Science Report
11 Chromatography Practical
Students use paper chromoatography as a method of examining evidence from a crime scene. Students analyze the ink from different pens to observe they each have their own unique chromatogram
Science Report
12 Assessment To test the students knowledge and understanding of the unit
Test
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