Practice multiplication facts and geography at the same time in this fun third grade math card game.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

This project examines how temperature affects the volume of gas in balloons.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

This project compares different liquids and the freezing, melting and boiling points of liquids.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

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

Study the effects of wind and temperature on evaporation. Place wet sponges in different environments, check at regular intervals, track time required to dry.

Play a game of "restaurant" to reinforce real-world applications of counting and using money.

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

Help your child "step up" to second grade math fact challenges with a fun addition and subtraction game in your very own kitchen.

This fun geometry game requires players to use measurement, find perimeter, and draw polygons. It's great for a fourth grade math student!

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

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

Learn how milk freezes into ice cream. Does the fat content affect how quickly the milk freezes? What is salt's role in the freezing process?

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

In this science fair project, students examine how temperature affects sugar transport within a plant.

Teach your third grader about the concepts money and purchasing with this "Mock Card Shop" activity.

This science fair project idea tests the effect of heat- at varying temperatures- on the viability of biological enzymes.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

Determine which environment keeps an ice cube frozen for the longest duration. Inspect and record your observations when cubes melt.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

The purpose of this science fair project is to investigate which food wrapping works best to keep refrigerated and non-refrigerated foods from spoiling.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

The objective of this experiment is to evaluate the effects of acid rain on plants.