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Give your budding young observers a chance to discover simple machines at use in their own home.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

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!

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!

Here's a science activity that lets a first grader use an empty dish detergent bottle to create his own fountain as he explores air pressure.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This science fair project idea produces sounds by creating vibrations using different objects.

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

Teach your first grade scientist the difference between liquids and solids using maple syrup.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

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.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

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

In this science fair project, young children discover what happens when two fluids that have different densities get together.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

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

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

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.