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Teach your child how butter is created by shaking up cream the old-fashioned way.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

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

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

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Learn all about balance and motion as your child designs a corn maze!

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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

Teach your child to dye eggs with natural ingredients from the grocery store. From pink to gold, these eggs are perfect for hiding, hunting or simply munching.

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

This science fair project teaches students about wilting and browning of salad greens.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Help your child make a beautiful homemade sandcastle that will last!

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

Start your toy engines -- this is going to be a fast and friction-filled race!

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.