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This simple activity is not only fun, it's also a useful way to organize children's closets — and offer kids some autonomy to boot.

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

Make edible amber fossils with your second grader to explore the fascinating world of science!

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

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

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

Demonstrate which cooking method gets rid of the most fat.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

How much water comes out of snow? Explore this timely question with your kindergarten scientist with this easy winter experiment.

In this challenge, students are tasked with creating a car that can be powered by a balloon!

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

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 fun experiment, we'll find out how color affects heat absorption!

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.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

Get your child outside to observe the clouds, and get a fun exercise in science, writing, and arts and crafts! Here's how.

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

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.

High school kids learn about fruit fly ethology in this cool lab that determines fruit fly movement and behavior under different conditions. Check it out.

Science fair project that determines how we can change potential energy into kinetic energy.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Science fair project that compares leaf pigments of various tree species. Which tree species do you think will have the most pigments and why?

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

Learn about the factors that influence group conformity.

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.