In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This science fair project idea demonstrates that plants give off water.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This project examines whether people's taste perception is influenced by what they see.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

In this project children practice the scientific method while playing with puffy paint.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

This classic children's game demonstrates how sound travels through air vs. through a solid.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

Using a toy race car kids create a visual model of the Doppler Effect.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.