In this science fair project, young children discover what happens when two fluids that have different densities get together.

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

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

This science fair project idea investigates if webbed feet help a duck (and others) swim.

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

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

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.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

This science fair project teaches students about wilting and browning of salad greens.

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

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

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

The objective of this science project is to determine the length of time for different seeds to germinate.

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

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

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

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

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

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!

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

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

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.

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

This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.