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

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Here is a quick experiment you can conduct at the playground to introduce or reinforce the concept of Newton's First Law, The Law of Inertia.

Learn with makes water molecules work with this fun and easy science activity!

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

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

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.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Teach your first grade scientist the difference between liquids and solids using maple syrup.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Making your own glass cleaner is easy, effective and inexpensive!

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

I scream, you scream, we all scream for homemade spearmint ice cream!

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.