This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

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

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

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.

This science experiment has students test whether a snail moves faster on concrete or dirt.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

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

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

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

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

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.