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.

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!

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

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.

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

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

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!

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

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

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!

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

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

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!

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

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.