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.

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

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

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

Does your child have trouble holding a pencil? Is writing an excruciating task? The key is to build up those hand muscles! This water relay race can help.

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 is a surprising science experiment that your child will surely be awestruck by! It involves poking sharpened pencils into a bag filled with water without spilling a drop of water.

Toothpaste plus water equals the start to a magical winter paper project.

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!

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