In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

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

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.

Discover whether a metal will expand under hot water.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Do different types of oil mix or stack? Find out in this science fair project idea!

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

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

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

This science fair project idea investigates whether plants can survive being frozen.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

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

This project investigates the affect of storage temperature on microwave popcorn.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

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

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

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 idea investigates the ability of different whitening toothpastes to whiten teeth.

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.