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.

Design and build a scale model representing living tree architecture. Then build a full-size version using one or more lives trees, and test your creation.

In this science fair project, young children notice and track changes in trees throughout the year.

Plants and light seem to be good buddies, but how far does the friendship really go?

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

This project explores whether there is an effect on people, including heart rate and self-expressed mood, when they are exposed to different types of music.

Science fair project that determines which foods and drinks contain the highest amount of glucose.

In this experiment, you will be making your own paper flashlight by conducting electricty with graphite.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

This experiment explores the question of whether age and/or gender play a role in people's ability to remember dreams.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

Test whether spot magnets can help improve the symptoms of an injury.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

People have favorite flavors, but what about ants? Which ant food is the most popular?

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

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

Science fair project idea that compares number and relative sizes of leaf stomata. Collect leaves of plant species, identify, observe stomata with microscope.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool 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.

Does "short circuit" mean that electricity takes a short course? This science experiment provides steps to help you get to the bottom of this science mystery.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This science fair project idea investigates whether rocks containing geodes can be determined from the outside.

This science fair project idea determines the probability of a coin landing heads or tails.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Looking for a project on machines? Get a fun elementary school science fair project idea to design a compound machine using your knowledge of simple machines.