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

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

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

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

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

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

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.

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

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

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

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

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

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 idea investigates whether air has mass and weight.

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.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

Get a better understanding of water content by dehydrating carrots.

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

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

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

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

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

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

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

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

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

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

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

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