This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

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

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

Science fair project in which you will start a fire from scratch without using matches or a lighter.

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.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

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

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

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!

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

This science fair project investigates why the number of visible stars changes from place to place.

Try this fun garden graphing project with your kindergartener this summer to give him a leg up in math and science while spending some valuable time outdoors!

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

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?

Do you think heat can affect a plant's growth rate?

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!

The project determines the forces that cause paper airplanes to fly and determine which type of paper airplane flies the farthest.

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

This science fair project idea researches the effects of acid rain on plant growth.