In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

In this science fair project, young children will become aware of and have the opportunity to experience the four basic tastes: sweet, sour, salty, and bitter.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

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.

Combine science with reading and art to help your first grader create an attractive holiday gift for a beloved friend or relative.

This science fair project idea explores substances that cause a bubble to last longer.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

This science fair project idea investigates how color affects temperature.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

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.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

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

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This activity is a fun way for your first grader to learn about how veggies help your body while being creative with art and drama. Here's how to get started.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

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

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

This science fair project idea compares biodiversity between drops of water.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

This science fair project idea investigates if fats add to the flavor of food.

Is our water polluted? Help your young scientist understand the importance of taking care of the environment with this simple experiment.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.