Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

Making candles from old candles is easy. Recycle old candle stubs to make a "new" candle, and teach your child about recycling at the same time!

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.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

This science fair project idea identifies clouds as a means of predicting the weather.

This science fair project idea measures physical dexterity as a function of temperature.

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

Discover if temperature settings in a fridge make a drastic difference in terms of bacterial growth.

Any time is the perfect time to whip up a delicious batch of fluffy pumpkin cookies.

These delicious Easter Basket Cupcakes are a simple, creative holiday treat. These cupcakes sit in waffle bowls with festive coconut grass and jellybean eggs.

This project concerns activity happening millions of miles away, on the sun.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

This project tests the hypothesis that dark colors absorb more heat than light colors.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Analyze competed scientific studies to determine the effectiveness of ancient remedies. Create a chart that illustrates the effectiveness of these treatments.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

This science fair project idea creates an underwater habitat and explores the basic needs of living things under water.

Time is an abstract concept that's difficult to grasp. But waiting for the turkey to come out of the oven on Thanksgiving is a concretely yummy experience.

Help your first grade scientist learn about metamorphosis by observing the life cycle of some interesting creepy crawlies.

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

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

This science fair project idea investigates food preference of birds.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

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