With the older group, I reinforced through drawing and discussion force, motion, thrust, and friction. We reviewed the scientific method and filled out a worksheet that encouraged asking questions and making predictions about what they thought would happen.
Using this framework as a guide, we wondered aloud:
- Will changing the shape of the balloon make the rocket travel faster?
- Will adding more air affect how far the rocket travels?
- What will happen if we raise the incline of the string?
We practiced calculating velocity based on how far the rocket traveled and how long it took.
And everyone enjoyed the leftover balloons...