Play Rock Tic-Tac-Toe, the perfect outdoor game for all ages. Help your child develop thinking skills and get away from the TV!

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Discover whether cold or hot water from the faucet will boil faster on the stove.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

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

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

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.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

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

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

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Your child can use Styrofoam, green paint and toothpicks to create her own cactus plant sculpture.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

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.

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

This science fair project will help students learn about non-vascular plants, such as mosses.

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

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.