Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

This science fair project idea measures physical dexterity as a function of temperature.

Identify vitamin C in fruit juices and to determine which of the following juices contain the most vitamin C

In this science fair project, high school students will try to determine the mathematical patterns in JS Bach's two movement preludes and fugues.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

Kids learn about the color rendering index by finding the best lightning for makeup in this fun and original physics science fair project idea.

Test the placebo effect in different groups of people.

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.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This science fair project idea focuses on the use a conductivity device to determine the ionic concentrations of hard water.

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

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.

Cleaning can be a chore, but not with this sudsy experiment!

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

Science fair project that explores the natural process of limestone formation.

This science fair project determines which of two chemical agents can be used to release the drug (tea) from hydrogel crystals.

Science fair project that examines various techniques for removing wrinkles from polyester garments to understand why polyester garments become wrinkled.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Find out which part of a flame burns wood the fastest and also if this is true for all types of flames such as candle-flame, burners, and lighters.

Determine which factors promote the greatest memory interference. Administer test, time how long it takes subjects to complete different tasks.

This biodiversity project examines the biodiversity in your own backyard.