This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

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.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

This science fair project idea explores whether white light can be separated into different colors.

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.

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

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

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Science fair project that examines condensation and the conditions needed in order for dew to form.

This science fair project idea produces varying pitches of sound.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

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.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then 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!

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

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

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

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.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.