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.

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

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

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 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.

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.

Try this fun outdoor game to improve your first grader's reading skills. This activity is perfect for summer!

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

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.

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

The project presents a tactile way to paint using water beads! The result will be a beautiful, expressionistic work of art.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Using water, corn syrup, and sequins, your child can create a unique art project while exploring what happens when different liquids are mixed together!

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

Delight your child by helping them to construct a boat that can hold two seaworthy toy figures in this engaging project made from upcycled water bottles.

Use these pretty egg carton flowers to decorate a spring table. They don't require water, they'll never wilt, and they're perfect for Easter.

You don't need to head to the Arctic to experiment with life in an igloo. Learners can build their own ice igloo at home from water and empty milk containers.

Help your first grader get started making this watering can that's filled with homemade flowers. It will brighten up any window sill ... and it's eco-friendly!

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Here's a science activity that lets a first grader use an empty dish detergent bottle to create his own fountain as he explores air pressure.

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

This is a fun way to introduce kids to the concept of volume, and give them a quick hands-on activity to boot.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.