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

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

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.

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

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.

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

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.

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

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

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

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.

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

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

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

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

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!

This second grade arts and crafts activity is all about caterpillars emerging from their cocoons as butterflies.

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

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

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

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

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.