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

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

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

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

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

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

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

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

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

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.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

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.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Test whether plants can grow without sunlight and water.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This science fair project idea demonstrates that plants give off water.

Find out whether putting something on top of a plant will inhibit its growth.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Find out whether packaged seeds actually do expire in this new science fair project idea.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

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

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.

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

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

Explore if planting seeds in a certain direction will affect how fast it germinates.

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.

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!

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.