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?

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

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

This science fair project idea identifies clouds as a means of predicting the weather.

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.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

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

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!

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

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

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

Making decorative pottery is a great way to experiment with making patterns and texture on a traditionally smooth surface.

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

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!

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

Hiding protein-rich quinoa and a variety of fresh vegetables, these meatballs are the perfect answer to kid food woes.

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

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.

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

Have your student draft a blueprint for a haunted house, and trick (or treat) them into learning about geometry in the process.

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

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

Whatever is stacked in your cupboard can be used to help your child learn how to compare fractions and decimals. A great hands-on math lesson!

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.

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.

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

Time is an abstract concept that's difficult to grasp. But waiting for the turkey to come out of the oven on Thanksgiving is a concretely yummy experience.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.