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

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?

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

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

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 teaches how the gases and pollution in the air affect the earth's atmosphere 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!

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

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

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.

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

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

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.

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

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.

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!

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

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.

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.