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In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.

After completing this fun science project, your child will have a better understanding of plants, and they may even develop a green thumb in the process!

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

Is it a square or a circle? See if you can trick your friends with this zany science project!

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

Create your very own scented hand sanitizer that will help your child to keep those nasty germs at bay!

Teach your child about recycling and gardening as she re-uses an empty plastic milk gallon jug to craft a swan-shaped plant container!

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

This fall, make a leaf crown that will encourage creative play and your child's interest in the natural world while you help them build fine motor skills.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Help your kindergarten scientist explore an important part of earth science: how soil retains water.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Help your child add some flair to the family garden with pencil pinwheels!

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

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

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

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

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

Blend art and science in this hands-on activity that shows your kindergartener how primary colors combine to make secondary colors.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

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

Get your child math and science savvy with this fun outdoor classification game. Using chalk, your child will classify what she sees in the natural world.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.