Science fair project in which you will create your electricity by making a homemade battery using salt water, a nail, and a copper wire.

This science fair project explores how salt and sugar affect the melting rate of ice in water.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

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

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

This science project challenges students to study the salt content in tap water and learn about electrochemistry.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Determine the effect of homework on academic performance. Collect grade info at the end of a semester, determine correlation between grades, amount of homework

Free science fair project idea examining how different types of water affect plant germination and growth.

Find out whether matte or shiny nail polish lasts longer.

In this experiment, students create music with subliminal messaging to try to influence people's decision-making.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

Devise list of randomly chosen words, test how many words volunteers can remember. Compare results of adults and children. Which have better memories?

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Science fair project that creates fog using bottles of hot and cold water.

Kids make an electromagnet in this electromagnetic induction experiment to learn about induction, current, and the right-hand rule.

This project explores ways to prevent static electrical shocks.

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

Can cells be frozen? This science fair project provides information to answer this question.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Learn about the Atwood Machine and Newton's 2nd Law with a pulley and masses of different weights in this physics science project.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

This project examines whether and what associations exist between numbers and letters and colors.