This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

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.

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

This science fair project idea explores whether talking to a plant will help it grow.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

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.

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 craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

This science fair project teaches students about wilting and browning of salad greens.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

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

This science fair project idea explores substances that cause a bubble to last longer.

In this project students experiment with making music using only glasses of water.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science fair project idea's objective is to become familiar with items your family regularly throws in the trash.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

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.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.