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Learn about this simple machine and make a pulley of your own to use for fun science trials.

This science fair project will help students learn about non-vascular plants, such as mosses.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

This science experiment has students test whether a snail moves faster on concrete or dirt.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

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

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

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

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

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

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This science fair project idea investigates if fats add to the flavor of food.

This science fair project idea investigates how magnetism can defy the force of gravity.

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

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

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.