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Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Work on measurement by sliding cards along a table with your second grader in this fun game. Use centimeters or inches, add up your totals, and see who's won!

In this activity, have your second grader practice measuring by finding the height, weight, and length of their most treasured toy!

Add these fun chocolate Groundhog Day cupcakes to your holiday desert recipe repertoire! They're fun to make with your kids and a delicious winter snack.

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

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Think you need a special dehydrator to make your own fruit leather? You can actually make a delicious version of this popular kid's snack in your own oven.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

How powerful is the reaction between baking soda and vinegar? Find out here!

This recipes is so easy your child gets to be master chef for this kitchen activity. He'll bake peanut butter banana oatmeal cookies that happen to be vegan!

Invite your second grader to help you measure and mix these fresh, cool concoctions!

This pumpkin dessert recipe tastes like pie but looks like a no-bake cookie.

Make this delicious warm apple bread for Hanukkah.

This fall, bake some festive caramel apple cupcakes with your second grader and help her build her math skills while you're at it!

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Transform your kitchen table into a winter wonderland with a cookie and cocoa party that looks freshly dusted with snow.

Homemade Halloween treats make great party foods for an All Hallow's Eve get together. These four homemade Halloween treats are scary-good.

Here's a place mat your second grader can create, based on the classic frontier tradition of patchwork quilting.

Topped with roasted pumpkin, prosciutto, herbs, and feta, these pita pizzas are a healthy, seasonal alternative to your classic pie.

Pfeffernusse are spicy and sweet Christmas cookies from Germany. Make a batch of traditional pfeffernusse this holiday season.

Make this easy recipe for Halloween, featuring white chocolate and pretzels, for a crispy, creepy treat!

Countries all around the world have been using the abacus for thousands of years to make math easier. Have your kid make his own abacus to practice arithmetic.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Get back into school with this exciting architecture exploration! In this craft activity your child will research, draw, and build his own school.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Get estimating with this spooky activity that asks your young mathematician to rely on their problem-solving skills to figure out how many items they believe are in spooky Halloween jars!

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.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!