Use familiar household items and decorations to turn estimation into a fun game!

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

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

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

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!

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.

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!

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

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

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.

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

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

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

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

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!

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.

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.

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

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

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

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.

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

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

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

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

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.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

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