Critique claims with evidence

9.B Respectfully provide and receive critiques about claims to identify relevant evidence to support an explanation for how energy transfers through the cart-launcher system before and right after a collision.

Students should be citing evidence and providing scientific reasoning to support their explanations. Group members ask clarifying questions to elicit details that reveal similarities and differences in their claims and to make connections between patterns in macroscopic observations and the particle nature of matter. Some parts of the student discussion should be focussed on why friction and air resistance affect the motion and kinetic energy of objects in the class collision system model as well as how the interactions that produce these forces would also affect the motion of particles in the air and on the surface of the track, box, and wheels of the cart.

If some groups aren’t making some of these connections, ask those groups to focus their discussions on a subset of the questions on Jigsaw feedback discussion.