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This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.

Can you stain teeth with tea, coffee, or coke? Explore how in this science fair project idea.

Examine the impact of insecticides on plant growth.

In this science fair experiment, middle school students evaluate whether tone of voice can influence our ability to remember a list of everyday objects.

Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Test whether spot magnets can help improve the symptoms of an injury.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

Explore the electrical energy present in energy drinks.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Find out whether matte or shiny nail polish lasts longer.

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

This science fair experiment examines the relationship between gender, age, and smiling.

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

This science fair project idea investigates whether plants can survive being frozen.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

Science fair project that determines whether spreading a moss soup over an area increases moss growth.

Examine how the tire treads of a bicycle affect its rolling frictional force. Change tires, test speed performance on different terrains.

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

Science fair project that examines the relationship between the size of a bubble and how quickly it falls. What is the correlation?

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

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

This science fair project idea studies whether a religious sleeping schedule relates to a higher IQ.

This experiment explores the trend of reactivity in the alkaline earth metals as you go down the second column of the periodic table of elements.

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

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!