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

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

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

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

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

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

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

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

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

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

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.

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.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

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

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.