Why do things sometimes get damaged when they hit each other?

Broken Things Unit

Handouts

Student Handouts

Full Student Edition

 Lesson 1               Initial Model with Damage, Without Damage, Norms
 Lesson 2             Shapes, Motion
 Lesson 3             no handouts for this lesson
 Lesson 5           Spring Scales, Different Speeds, Different Masses
 Lesson 6             Forces in Collision
 Lesson 7             no handouts for this lesson
 Lesson 8            Gotta Have It
 Lesson 9            Speed Investigation
 Lesson 10           Spring Scale Launcher
 Lesson 11            no handouts for this lesson
 Lesson 12            Exit Ticket, Answer DQB, Bike Helmet
 Lesson 13            Materials Reference Sheet