Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

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

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

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.

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

Help your kindergarten scientist explore an important part of earth science: how soil retains water.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Test whether plants can grow without sunlight and water.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

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

Is our water polluted? Help your young scientist understand the importance of taking care of the environment with this simple experiment.

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

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

Introduce your child to the wonders of colorful chemistry with this simple food coloring project.

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

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

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

Use pepper and soap to discover some fun facts about the properties of water.

Help your kindergarten science maven explore the water cycle without getting everything wet.

Teach your child about using pumps to move water in this simple and educational preschool science activity!

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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

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