1. NEW tables: go to them, please!
BACK R TABLE
KAYLA
BACK L TABLE
DOMINQUE
JACY
ELENA
VERONICA
MADISON
TABLE
SYDNEY
TRINITY
FRANKIE
ALEC
BRIANNA
CALISTO
EMANUEL
ALEXIS
MAURICIO
JOSE
SABRINA
DAMARIS
ANNA
FRONT R TABLE
CELESTE
FRONT L TABLE
PHOEBE
EVELYN
ISIZ
GABBY
STEPHANIE

2. NEW tables: go to them, please!
BACK R TABLE
BACK L TABLE
TABLE
GIOVANNA
SIERRA
WILLIAM
DOROTHY
RYAN
ALEX
EDER
VICENTE
HALEY
AVORY
ALEXIS S
CHRIS
VICTORIA
MARQUISE M
MICHAEL
FRONT R TABLE
TIFFANY
FRONT L TABLE
JOSH
JESSICA
BREANNA
NICK
SEVON
MARQUISE G

3. SHAKE HANDS AND SAY ‘HELLO’ TO YOUR NEW TABLE PARTNERS.

4. DO NOW:
Police broke into a house and found the owner slumped dead in a chair with a bullet hole in his head. On the floor there is a gun and on the table a cassette recorder. When an officer pushed play on the cassette recorder they heard the message "I cannot go on any longer and have decided to commit suicide" followed by the sound of a gunshot. The police immediately started a murder investigation. Why?

5. They didn't have to rewind the tape so somebody else must have.
An answer
They didn't have to rewind the tape so somebody else must have.

6. 30 seconds to take care of your business

7. Suggested text of the day
Group MMS
Mom Dad Bro Sis Friends
Dog Cat Goldfish Parrot
Ballistics is bananas

8. OBSERVE AND CLASSIFY GUNS AND AMMUNITION
LEARNING OBJECTIVE
OBSERVE AND CLASSIFY GUNS AND AMMUNITION

9. IDENTIFY INDIVIDUAL MARKINGS ON AMMUNITION.
LEARNING OBJECTIVE
IDENTIFY INDIVIDUAL MARKINGS ON AMMUNITION.

10. TODAY’S AGENDA DO NOW: be kind, rewind Gun Card Sort Notes
Ammunition Observation Lab
Formative blog post
PLEASE REMINDER ME TO HAND BACK YOUR QUIZZES

11. Simple Definition of ballistics Full Definition of ballistics
: the science that studies the movement of objects (such as bullets or rockets) that are shot or forced to move forward through the air   
Full Definition of ballistics
1a :  the science of the motion of projectiles in flight
b :  the flight characteristics of a projectile
2a :  the study of the processes within a firearm as it is fired
b :  the firing characteristics of a firearm or cartridge

12. Gun card sort
Sort your guns in the way that you think they should be sorted.
Think of a name/ description for each group of guns.
12 people will share.

13. How did you categorize this gun?

14. How did you categorize this gun?

15. How did you categorize this gun?

16. How did you categorize this gun?

17. How did you categorize this gun?

18. How did you categorize this gun?

19. How did you categorize this gun?

20. How did you categorize this gun?

21. How did you categorize this gun?

22. How did you categorize this gun?

23. How did you categorize this gun?

24. The gun that shot President Lincoln
How did you categorize this gun?

25. Long Guns and Handguns Long guns Handguns Automatic and Semi-automatic
Rifles fire bullets
Shotguns fire pellets (shot) or a single projectile (slug).
Handguns
Pistols fire bullets with one hand
Revolvers have a cylinder that holds usually six cartridges
Automatic and Semi-automatic

26. The bullet that killed President Lincoln

29. Chapter 17 Ballistics By the end of this chapter you will be able to:
Explain the differences between a handgun, a rifle, and a shotgun
Describe rifling on a gun barrel and how it affects the flight of the projectile
Explain barrel size and caliber
All Rights Reserved South-Western / Cengage Learning © 2012, 2009
Forensic Science: Fundamentals & Investigations, Chapter 17

30. Introduction Ballistic evidence helps explain:
What type of firearm was used
The caliber of the bullet
The number of bullets fired
Where the shooter was located
Whether a weapon was fired recently
If a firearm was used in previous crimes

31. History of Gunpowder and Firearms
Chinese invented gunpowder over a thousand years ago
Muzzle-loading matchlocks used wicks to ignite the gunpowder
Cartridge and breech loading
Revolver, semi-automatic, and automatic handguns

32. How a Firearm Works
The firing pin hits the base of the cartridge, igniting the primer powder
The primer powder sparks through the flash hole to the main propellant supply

33. How a Firearm Works
The pressure of the explosion pushes the bullet from the casing into the barrel
The bullet follows the lands and grooves spiraling out of the barrel

34. Long Guns and Handguns Long guns Handguns Automatic and Semi-automatic
Rifles fire bullets
Shotguns fire pellets (shot) or a single projectile (slug).
Handguns
Pistols fire bullets with one hand
Revolvers have a cylinder that holds usually six cartridges
Automatic and Semi-automatic

35. Firearms and Rifling
Grooves and ridges (lands) in the barrel of a gun produce the twisting that adds accuracy
This leaves a pattern on the bullet that is unique (individual evidence!)

36. Bullets, Cartridges, and Calibers
Cartridge—a case that holds a bullet, primer powder, and gunpowder
The bullet, usually of metal, is out front with the cartridge, holding the primer and propellant powders, behind.

37. Marks on the Spent Cartridge Casings
Firing pin marks
appear on the rim or center of the spent cartridge
can be used to match a cartridge to a firearm
Breechblock marks
produced when the cartridge casing slams backward and strikes the breechblock
Extractor marks
Ejector marks

40. Caliber of the Cartridge
Caliber—a measure of the diameter of the cartridge
In hundredths of an inch OR thousandths of an inch OR millimeters.
Why should the caliber of ammunition match the firearm that shoots it? If they do not match, what could go wrong?

41. The Study of Bullets and Cartridge Casings
How is each fired bullet marked?
What is the procedure to match a spent bullet to the firearm that shot it?
What makes up a test-firing, and why is it done?
Forensic Science: Fundamentals & Investigations, Chapter 17

42. FORMATIVE BLOG POST
Take a picture of your ammunition lined up next to your chart.
Post the picture on your blog.
Write 2-3 sentences explaining the most important ideas you learned today.
** You can include a link to your learning partners’ blog if you want.