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

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

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.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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

This project compares the strength of one, two, and three-ply toilet paper.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

Find out whether a longer airplane will fly farther or a wider paper airplane.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

This first grade science activity brings the green grass of early spring inside while teaching your child about the cycles of growth.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

This second grade arts and crafts activity is all about caterpillars emerging from their cocoons as butterflies.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

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

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

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

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.