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

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

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

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

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

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!

In this activity, have your second grader practice measuring by finding the height, weight, and length of their most treasured toy!

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

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!

Work on measurement by sliding cards along a table with your second grader in this fun game. Use centimeters or inches, add up your totals, and see who's won!

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.

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

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

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

Practice measurement using centimeters in this fun math race designed for your second grade student!

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Give your second grader a chance to get his feet wet with measurement before he moves onto the more complicated stuff by trying this activity with him at home.

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

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.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

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 fall, bake some festive caramel apple cupcakes with your second grader and help her build her math skills while you're at it!

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.

Transform your kitchen table into a winter wonderland with a cookie and cocoa party that looks freshly dusted with snow.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

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.