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?

It's important to be able to add and subtract quickly and accurately, and this activity is the perfect way to practice.

In this matching activity, your kid will match the clock faces representing analog time with the numeric readings representing digital time.

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

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

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

Liven up a lesson about graphing by helping your third grader compile a bar graph from his classmates' birthday data.

Help your child "step up" to second grade math fact challenges with a fun addition and subtraction game in your very own kitchen.

Your child can brush up on her math skills by charting the length of time that each candle on the menorah takes to burn.

Your child will be cheering for 8s and 9s as she tries to create a larger number than her competitors. Whoever ends up with the largest number wins!

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!

This pyramid card game is a fun way to help your child learn addition and subtraction. Best of all, itâs quick to set up and easy to play.

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

Multiplication facts are a necessary skill, and this board game provides a fun way for your third grader to practice them!

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

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

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

Practice your addition and subtraction in this card game. Disclose is a math activity any first or second grader will love!

Play this "subtraction war" card game with your second grader and watch his math facts mastery leap forward!

This game is the perfect way to prepare your child for any shopping adventures you may embark upon, all while practicing important math concepts.

Try this fun addition game with your second grader! Arrange playing cards to find the largest possible sums.

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

Here's a super fun game to get in some place value practice with your child!

Does your second grader want to learn a magic trick? Here is a simple trick using only 3 dice and a little bit of addition and subtraction.

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!

Race to double numbers in this competitive card game. Try one-digit or two-digit numbers, or more!

Help your child sharpen time skills by creating a special day and charting each part in a detailed schedule.

Create equations in this strategic math card game. Your second or third grader can practice addition, subtraction, multiplication, and division in a new way!

Tangrams are a kindergarten staple, but now it's time to take them to the next level! Get your child started on geometry with this tangram puzzle.

Teach your third grader about the concepts money and purchasing with this "Mock Card Shop" activity.