The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

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

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Forget store-bought dyes this Easter: color your Easter eggs with natural dyes made with ingredients from your own kitchen in this 1st grade activity.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

Slip some science into storm watching with a homemade rain gauge!

This science fair project idea explores how length affects the weight a bridge can hold.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

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

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

Introduce your child to the importance of preserving the world's biodiversity by turning a lesson on endangered species into a fun game for the whole family.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.