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

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 biodiversity of fungi in different ecosystems by identifying species of fungi.

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

This science fair project idea compares biodiversity between drops of water.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

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.

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

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

Find out whether packaged seeds actually do expire in this new science fair project idea.

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

Find out which type of sponge holds the most water.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

This science fair project idea investigates how the shape of an object affects drag.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

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.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This science fair project idea examines which type of insulation holds in the most heat.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

The objective of this science project is to determine the length of time for different seeds to germinate.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

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