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

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

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.

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

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

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

The objective of this science fair project is to investigate salt water density.

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

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.

Plants need water to grow. In this project we learn how plants transport water from their roots to their leaves

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

This science fair project idea investigates whether air has mass and weight.

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

In this project, a basketball containing different psi is dropped to see how well it bounces.

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 idea investigates if webbed feet help a duck (and others) swim.

Get a better understanding of water content by dehydrating carrots.

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?

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

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

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

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.

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, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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.

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