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

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

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

This science fair project idea determines what household items are good conductors of electricity.

Have your child kick off their summer vacation by making a miniature water slide!

Discover whether a metal will expand under hot water.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Science fair project that examines condensation and the conditions needed in order for dew to form.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Determine if gender affects the ability to identify different smells.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This science fair project idea investigates the hardness property of minerals.

In this fun activity, your child will create their very own solar oven to bake s'mores!

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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

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.