Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

This science fair project idea determines what household items are good conductors of electricity.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

Science fair project that determines whether mass and weight are the same or different.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

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

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

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

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!

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

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.

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

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.

Help your child plant a "tea garden": a garden made of herbs for making teas.

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

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.

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

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

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