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

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

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

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

This project compares the strength of one, two, and three-ply toilet paper.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

Children learn the six parts of a plant...but do they really understand? Try this plant-themed meal plan to bring school science into the home.

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

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

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

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

Help your first grade scientist learn about metamorphosis by observing the life cycle of some interesting creepy crawlies.

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!