In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

Use playing cards to learn about temperature as well as positive and negative integers in this fourth grade math game.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

If you're looking for a fun way to have your child gain practice pattern-making while working out fine motor skills, making Washi eggs is the perfect activity.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Introduce your fourth or fifth grader to volume by having him build rectangular prisms, and then count each sugar cube to check his volume calculations.

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

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

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.

Practice conversions within the metric system in this fun math card game for third graders.

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?

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!

These delicious Easter Basket Cupcakes are a simple, creative holiday treat. These cupcakes sit in waffle bowls with festive coconut grass and jellybean eggs.

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

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Practice measurement using centimeters in this fun math race designed for your second grade student!

This fun activity encourages your child to develop their skills in not only taking measurements, but also in working with the measurements themselves.

Have your child construct his own Christmas tree from construction paper while cutting, overlapping and measuring to create an adorable modern design.

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.

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

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

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

This little chick is so cute that your child will want to make a whole flock to call her own.

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

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.

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.

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!

Give your second grader a chance to get his feet wet with measurement before he moves onto the more complicated stuff by trying this activity with him at home.