Make your own marshmallows and mix up some very interesting third grade chemistry lessons 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.

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!

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

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!

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.

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

Do you think heat can affect a plant's growth rate?

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.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

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

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?

How much does 100 weigh? Play this fun guessing game with your child to commemorate the 100th day of school.

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!

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

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

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

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

This project tests the hypothesis that dark colors absorb more heat than light colors.

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

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

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

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

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

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