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In this activity about ramps, learners explore and measure the rate at which spherical objects roll down a ramp.

In this activity, learners build a sled kite that models a type of airfoil called a parawing.

In this activity, learners make a paper model of a polymer, then make Silly Putty, an actual polymer.

In this sports-themed engineering activity, learners create super bouncy balls out of balloons. Learners brainstorm, test their designs, and share results.

In this engineering activity (page 5 of PDF), young learners investigate how materials and design contribute to the strength of a structure, particularly walls.

In this activity learners compare the bounciness of warm and cold racquetballs to see if temperature makes a difference in how well they bounce.

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

In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes.

Learners drop two different masses of play dough and observe how long it takes them to hit the ground.

Learners build a pendulum from a yo-yo, and then design their own experiment to determine what affects the pendulum's period of swing.

In this activity, challenge learners to design a roller coaster ride for a marble using cardboard and other simple materials.

This activity (on page 2 of the PDF under SciGirls Activity: Luge) is a full inquiry-based challenge related to motion and design optimization.

In this activity, learners explore conservation of energy by experimenting with a solar cell light device.

In this activity, learners make a black box device that serves as an excellent analogy to Rutherford's famous experiment in which he deduced the existence of the atomic nucleus.

In this activity (26th on the page), learners construct an easy-to-build device and test motor learning.

In this two-part activity about luminescence, learners explore the chemistry that happens inside glow sticks and other light producing reactions.

In this physics activity (page 12 of the PDF), learners explore potential and kinetic energy by rolling different sized marbles down an inclined plane.

Learners explore the physical properties of a variety of balls and how they bounce.

In this activity, learners measure the diameter of their water balloons, model an impact, measure the diameter of the “crater” area, and determine the ratio of impactor to crater.

In this activity, learners explore the unseen force of friction and how surfaces can slow moving objects at different rates.