Determine whether butterflies like to drink sugar water, salt water, or plain water.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

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?

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

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.

This science fair project idea compares biodiversity between drops of water.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

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.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

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.

Have your child kick off their summer vacation by making a miniature water slide!

Discover whether a metal will expand under hot water.

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.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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

The objective of this science fair project is to analyze the effects of salinity and temperature on water.