Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

In this science fair project, students use the streak test to tell minerals apart from each other.

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

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

Help your child learn about animal classification with this fun and delicious activity.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

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.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

This simple experiment serves as an introduction to the greenhouse effect.

This science fair project teaches students the differences between fruits and vegetables.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

Let your fabulous crafter use their favorite flowers, fruits and herbs to whip up a delicious perfume that they can proudly present to a friend or a loved one.

In this design challenge, students will be tasked with creating a bouncy ball polymer!

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.