This science project teaches students to classify different shapes of leaves.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

This science fair project idea examines the reason boats are shaped and engineered.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Looking for a fun summer adventure? Learn what it was like to be a prospector during the California Gold Rush by panning for gold in a local creek.

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

How do organic materials become soil? This science experiment measures what materials biodegrade.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

This project determines what category of person is most likely to be ticklish.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

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

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

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Find out whether a longer airplane will fly farther or a wider paper airplane.