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Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

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

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

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

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Examine the effect of pressure on carbonation in soda.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

Construct and experiment with a periscope using reflected light rays to gather an image.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

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

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

In this science fair project, students use the streak test to tell minerals apart from each other.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

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.

This science fair project idea investigates whether plants can survive being frozen.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.