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How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

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

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

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

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

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

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

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

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

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

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

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

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Set up a fun guessing game for your curious kindergartener, one that will test her ability to use all five of her senses.