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

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!

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

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

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 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 measures physical dexterity as a function of temperature.

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.

How many steps long is the hallway? Kids put their graph-making skills to work as they make a step map of their own house.

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

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

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

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

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

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.

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

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

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.

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

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

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

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 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.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.