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

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

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.

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 fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

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

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

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

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 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.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Here's a science activity to help your child investigate how seeds are designed to travel.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

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?

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

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

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

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 science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

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

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