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To learn how friction affects motion, learners build a measurement tool from a rubber band and other simple materials.

Learners explore the concepts of equilibrium and center of mass by seeing how non-symmetrical objects balance.

Learners build a simple hovercraft using air from a balloon to levitate a craft made from a compact disc (CD).

Learners build a lever and use it to lift a load. With the load on one end of the ruler, learners add coins to the effort cup at the other end until the load is lifted.

Learners construct a rocket from a balloon propelled along a guide string.

Learners build simple catapults and use them to launch cotton balls.

Learners investigate weight by building a spring scale. They observe and record how it responds to objects with different masses.

Learners construct and launch paper helicopters.

Learners build structures from spaghetti and marshmallows to determine which structures are able to handle the greatest load.

Learners examine collisions between two skateboards carrying different masses. They learn about conservation of momentum in collisions.

Using simple, inexpensive items, learners build and test submarine models.

Learners build at least two different spinners (tops) to investigate how mass distribution, size, and shape affect the length of time the spinner spins.

In this activity, learners build their own construction cranes using tongue depressors and pushpins.