In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Your child can create his own texture tree, experimenting with design during the process. The result will be a beautiful addition to your holiday decorations

This activity is a great way to teach kids that, to find examples of science in action, they donât need to look any further than their own backyard.

This easy project for little hands uses mushroom spores to make an imprint of the mushroom, and the result is very beautiful.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

If you're looking for something to keep your kid busy on a warm day, and give him some writing practice in the process, bring on the mud!

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

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

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

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

Determine whether butterflies like to drink sugar water, salt water, or plain water.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Children learn the six parts of a plant...but do they really understand? Try this plant-themed meal plan to bring school science into the home.

This experiment tests which gender is better at catching how a magician performs his tricks.

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits