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The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

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.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

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

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Discover whether cold or hot water from the faucet will boil faster on the stove.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

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

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

How powerful is the reaction between baking soda and vinegar? Find out here!

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

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

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science fair project investigates why the number of visible stars changes from place to place.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

Discover which fabrics shrink the most in the wash and why.

Do you think heat can affect a plant's growth rate?

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?