Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.