This is a fun and inexpensive project and it's a great way for your child to build basic geometry skills, like shape recognition and pattern/angle familiarity.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Learn how different types of soil affect how animal tracks form in this experiment!

In this fun guessing game, your child uses his sense of smell and taste to figure out what is in the container. Here's how to play:

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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

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

Is it a square or a circle? See if you can trick your friends with this zany science project!

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

In this science fair project, young children notice and track changes in trees throughout the year.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

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

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

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

This project determines what category of person is most likely to be ticklish.

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.

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

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

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

Use pepper and soap to discover some fun facts about the properties of water.

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

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

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

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.