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.

Explore the concept of receptive fields and why different parts of our body have different levels of sensitivity.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

Salmonella and E.coli are common food contaminates. This experiment measures the time it takes for E.coli and Salmonella to reach hazardous levels in fish.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Sure, you already know that water is made up of hydrogen and oxygen, but did you know that oxygen levels differ in different types of water?

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

This cool electricity project teaches kids how connecting batteries in series vs. parallel circuits can contribute to different levels of voltage and amperage.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

This basketball project explores the best way to make the perfect shot every time.

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Make edible amber fossils with your second grader to explore the fascinating world of science!

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

In this experiment two environments will be compared: a room with interior design that uses correct Feng Shui versus one with incorrect Feng Shui.

This experiment investigates if stress alters body temperature.

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

It has long been believed that weather influences mood and behavior. This experiment will evaluate if weather can really impact the way people feel.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

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

This experiment investigates if small changes in your diet can alter your basal body temperature.

Here's a pressed leaf card project that puts science and writing together for your second grader.

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

This science project investigates the influence of different genres of movies on appetite.

In this science fair project, students investigate how different colors influence appetite.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

This experiment investigates whether the psychological phenomenon of the halo effect can be used to explain people's perceptions of others.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

Teach your fifth grader about the wonders of wind by making and observing this winter wind chime.