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

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

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 objective of this science fair project idea is to determine whether frozen vegetables have more nutrients than canned vegetables.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

Your child can turn cookie dough into a big pile of colorful painted fall leaves ready for eating!

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

Determine which metal has the highest rate of conductivity.

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

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.

Measure temperature change over time using a variety of insulation materials. Be creative with insulation materials: scarves, yarn, socks, feathers, oil, etc

This science fair project idea determines which flower lasts the longest.

This simple experiment serves as an introduction to the greenhouse effect.

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.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

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

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

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 fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

Determine whether fresh vegetables have more calories or less calories than canned vegetables.

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.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

Teach your young academic about counting and clocks with a tasty treat!

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

This experiment researches if you gave different amounts of food to mosquito larvae would they grow faster or slower

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?

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.