Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

This science fair project idea compares biodiversity between drops of water.

Try hammering some plants with your kids to teach them a valuable lesson in flower science while making beautiful artwork in the process!

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Have your child kick off their summer vacation by making a miniature water slide!

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project idea determines which method of hand cleansing is the most effective.

Explore if planting seeds in a certain direction will affect how fast it germinates.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Make a wish upon a tree with this craft that also helps your child learn more about Chinese culture.

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

This surprisingly good glue recipe comes from common kitchen items.

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

This science fair project idea produces sounds by creating vibrations using different objects.

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

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

In this activity, your child will be challenged to make a tower using paper cups.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.