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

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?

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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.

Reuse and recycle cardboard tubes to make spooky spiders, kooky caterpillars, wacky worms, and more.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

People have favorite flavors, but what about ants? Which ant food is the most popular?

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

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

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

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

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

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

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

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

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

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Make all-natural dye from vegetables to create gorgeous homemade play-silks!

Create your own cloud with an activity that will explain how important concepts such as evaporation, condensation, and precipitation work.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Teach your child to dye eggs with natural ingredients from the grocery store. From pink to gold, these eggs are perfect for hiding, hunting or simply munching.

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

This project can help prepare your child for a trip to the tide pools, or give him a way to remember some of the many creatures he saw during his visit.

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.