Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

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!

This very physical game gets math off the page and into the real world-- and it works on number sense and estimation, key skills for kindergarten readiness.

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 simple experiment serves as an introduction to the greenhouse effect.

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!

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

This activity spotlights everyone's favorite reindeer, Rudolph, and preserves your child's handprints in his "antlers".

The garden is the perfect place to practice math and science with preschoolers. Get digging (and counting, sorting, observing at the same time!)

Dig up some dinos while promoting curiosity and sensory skills in this hands-on activity that will have your child searching for prehistoric treasure!

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.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

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

Encourage your child to compare and contrast a wide variety of autumn-themed items by weighing various objects and recording their findings.

In this activity, you child will learn about how heat changes food. On the next sunny day, head outdoors to make a treat in an outside oven! Here's how:

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.