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

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.

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

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

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

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.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

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 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.

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

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?

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!

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

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?

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.

Word color association is just a fancy way to talk about the way we connect colors with words.

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

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.