Blood Spatter Begin Scenario Forensic Science 1815 Drill

Blood Spatter Begin Scenario Forensic Science 1/8/15

Drill • Get a ruler/protractor. Do #2 -4 on Application and Critical Thinking questions and calculate the angle for each blood droplet. You may use your phone as a calculator. – See Ms. Bloedorn for the Sine Tables • HW: Review Questions: – Answer #26 -32 – Cross out #12 -14, 18, 20 -21

Objectives • IWBAT – Reconstruct a crime based on blood spatter analysis.

Crime Scene • You and a partner (or trio) will be investigating a crime scene to determine what happened. • Mr. Imavictim was found beaten and bloody at the elementary school by his friend, Mr. Mopandbrush. They are both janitors there. • Mr. Imabaddy was seen leaving the area by Mr. Mopandbrush.

Analysis • First, determine the area of convergence (AOC) (front of pg. 1) • Then, calculate the angles for each blood droplet. (front of pg. 2) Fill the distance and angle in on the table (back of pg. 1) • Next, read the statements from each man and take notes on what they say happened. – These are required—yellow packet • Finally, Sketch on the blank crime scene map where the crime took place – Use the angles and distances calculated to determine where each impact occurred.

Materials • Each group will need – Ruler (measure in cm) – Protractor – Various pencils (colored and normal) – Packet of information (colored paper) • Interviews • Sin/Cos/Tan table • Sign this out! – Scenario packet (white paper) • • Wall with blood stains (step 1) Table to record data (step 3) Angle of Impact calculations (step 2) Crime scene layout (step 4)

Solve the crime! • Who is telling the truth? Only the blood will tell…