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This science fair project idea investigates the difference in reaction times between boys and girls.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

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

Science fair project that determines whether mass and weight are the same or different.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

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.

This science project allows students to study the psychology of happiness.

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Here is a kindergarten activity that blends art and science by using magnets, paint, and objects found around the house to create a picture.

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

Checkerboard play challenges students to use spatial reasoning and computational thinking.

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Here's a science activity to help your child investigate how seeds are designed to travel.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

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.