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!

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?

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

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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.

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.

Countries all around the world have been using the abacus for thousands of years to make math easier. Have your kid make his own abacus to practice arithmetic.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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.

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

Learn how to make a paper snowflake with these simple instructions. Help your child learn how to make a paper snowflake with only paper and scissors.

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

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!

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.

This measurement activity uses feet to compare objects, but not the ones found on rulers and measuring sticks...the feet on your child's own body!

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.

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.

Introduce your child to science with something they see everyday--their shadow!

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

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

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

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

Help your child learn science and math skills like sorting, sequencing, and ordering while taking a nature walk and collecting and collaging leaves.