Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

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

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Reinforce your child’s understanding of the alphabet by helping them construct all of the letters using pipe cleaners.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Cleaning can be a chore, but not with this sudsy experiment!

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

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

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

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

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

In this activity your child will create their very own marble maze!

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

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

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.