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!

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!

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

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

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

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 is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

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

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.

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

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.

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.

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

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

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

Add these fun chocolate Groundhog Day cupcakes to your holiday desert recipe repertoire! They're fun to make with your kids and a delicious winter snack.

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

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

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

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

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.

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

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

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.

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!

Topped with roasted pumpkin, prosciutto, herbs, and feta, these pita pizzas are a healthy, seasonal alternative to your classic pie.

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.

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

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