A GREAT introductory activity to potential and kinetic energy with a full review of scientific variables!
NGSS Standards :
MS-PS3-2. Develop a model to describe that when the arrangement of
objects interacting at a distance changes, different amounts of potential
energy are stored in the system.
MS-PS3-5. Construct, use, and present arguments to support the claim
that when the kinetic energy of an object changes, energy is transferred to or
from the object.
Meets ALL Science and Engineering practices