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This science fair project idea investigates how color affects temperature.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

This science fair project idea demonstrates that plants give off water.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

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

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

This science fair project idea investigates how the shape of an object affects drag.

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

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This project determines what category of person is most likely to be ticklish.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

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

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.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

This science fair project examines how seeds hitchhike on animals and clothing.

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

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

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

In this design challenge, your child will create a parachute for a small toy using typical household items.

This science fair project idea explores whether talking to a plant will help it grow.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

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

This science fair project idea explores whether white light can be separated into different colors.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.