4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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

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

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Try this chemistry experiment with your curious kid and get some "shocking" results!

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

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

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

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.

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

An home science experiment for older students that teaches about the science behind heat.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science fair project idea investigates how color affects temperature.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project idea explores the egg's thin membrane.

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

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project idea produces varying pitches of sound.