Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

This project compares the strength of one, two, and three-ply toilet paper.

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.

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

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

This science fair project idea examines whether boys and girls differ in reflexes.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Is our water polluted? Help your young scientist understand the importance of taking care of the environment with this simple experiment.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

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

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Determine which kind of rock (igneous, sedimentary, metamorphic) has the greatest reservoir capacity, which is the ability to hold the most oil and natural gas.