Forensics

How do scientists collect, analyze, and report evidence?
October 16-  Today is your day to practice microscope skills. You will progress at your own rate through the activities today.

**PRACTICE, PRACTICE, PRACTICE!!** 1) Use this checklist to make sure you have all the skills and knowledge necessary for using a microscope.
 * There are microscope stations on the lab tables. Use the prepared samples first. Try the different models of microscopes so that you can focus each one.

2) Practice making dry mount slides using the hair samples in class. There is hair from a horse, cat, and goat for you to use and practice focusing at each magnification.
 * Review the parts of hair with this Powerpoint . [[file:Hair.ppt]]
 * Use the book (p.56) and the PowerPoint to complete Q 1-12 on the Hair and Fiber handout.
 * Make a dry mount slide of using hair and a cover slip. Follow the directions on p. 2 of the handout, Hair Evidence lab. Draw the samples in the circles provided.

3) Practice making wet mount slides using the onion sample and/or your cheek cells. Here is a great site for reviewing how to make slides. [|How to make wet mount slide]
 * Use the iodine stain for the onion cells and the bromophenol blue for cheek cells.
 * Be careful. When you stain a slide to see the structures better, you can also stain your clothes!

4) **CLEAN UP!!!**

We will have a quiz and practical starting on Thursday. The Moodle quiz is for you to identify the parts and function of the microscope. The practical is a skills test of your use of the microscope. Use the rubric to assess your skills.


 * October 18-** Practice! Study for the quiz on the parts and function of a microscope on Thursday. Are you ready to take the practical? Please bring your rubric to class.


 * October 20-** Complete the Fiber section of your handout and look at fiber samples. Draw them in as much detail as possible[[file:fibers08.ppt]]


 * October 25-** Here is the first part of the Project Mystery- The Missing Masterpiece. [[file:Chapter 1 project doc.docx]]


 * October 27-** Study for a quiz on Chapter ! in the Forensic book. Complete the end of section questions for Section 3 of Chapter 1 for review on Monday. The quiz is on Wednesday.


 * October 31**- Study for chapter 1 quiz on Wednesday.


 * November 10- Chromatography**- Here is a set of procedures for your review. [[file:lipstick chromatograph example.pdf]]

and the rubric.

Finally, here is an example of a data table. Have the materials list and the procedures written for Monday. You will try to identify the crime scene lipstick through chromatography.


 * November 16-** Which lipstick matched the crime science lipstick? Finish your comparison, answer the questions on the Chromatography Lab Requirements doc, and use the rubric to rate the quality of your report. **Submit the complete report on Moodle BEFORE you come to class on Sunday.** Bring the completed rubric to class. We will evaluate each other's report and get feedback. The summative assessment using pens starts next.




 * November 20**- Today we reviewed the rubric for the chromatography formative assessment. Now we start the summative assessment for ink. Which ink chromatography matches the crime scene one? There are 4 inks are 1) Suspect A- wide tip. 2) Suspect A- narrow tip, 3) Suspect B- wide tip, and 4) Suspect B- narrow tip. The solvent for these inks is water.

For Tuesday- Write the procedures for the 4 inks chromatography and have a data table ready.

**MESAC Students and any one who was absent on Sunday-** **Make-up time is on your return Tuesday at lunch. Be there!!**


 * November 22-** Complete the chromatography ink lab in class today. Run the 4 chromagraphies, complete the measurements, and write the conclusion**.** Answer the questions as part of your conclusion, just like in the lipstick report. Make sure that you use the rubric to check the quality of your work.**The report must be submitted on Moodle by Wednesday morning at 8 a.m.!**


 * November 27-** Study for a quiz on Chapter 2, Lessons 1 and 2 from the Forensics book. The quiz will be on Thursday . Block H must complete Q 1-4 on page 48.

We'll have another quiz on Chapter 3 -just fingerprints- and information from "Murder in a Meal" next week. You could get ahead and study this now!


 * December 1**- Here are PowerPoints with information for today's class. [[file:fingerprintanalysisPPT.ppt]]



We will practice the tests today and conduct them in the next 2 classes. Here is the rubric for the assessment. There will be a quiz on Chapter 3 (just fingerprints) and information from "Murder in a Meal" on Tuesday, December 13.
 * December 5-** Murder in a Meal! This will be the summative final for the forensic unit. You will analyze the victim's "stomach contents" to determine where the victim ate his last meal. This file is background information for food testing and has the instructions for the tests. [[file:Murder and a Meal Background.docx]]

Study for a quiz on Tuesday on fingerprints and macromolecule testing!
 * December 11-** Complete the Murder in a meal summative assignment. Use the rubric and this file. [[file:Murder in a Meal report requirement.docx]]