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

This project compares the strength of one, two, and three-ply toilet paper.

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

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

Start your toy engines -- this is going to be a fast and friction-filled race!

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

This science fair project idea determines the most effective method of preserving food.

Make a backbone model to explore human anatomy and life science.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

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

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

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

Explore if planting seeds in a certain direction will affect how fast it germinates.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.