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This science fair project idea identifies trees using a dichotomous key.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Science fair project that determines whether mass and weight are the same or different.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

How powerful is the reaction between baking soda and vinegar? Find out here!

Determine whether butterflies like to drink sugar water, salt water, or plain water.

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

This science fair project examines how seeds hitchhike on animals and clothing.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Construct batteries that make electricity from fruits with this fun science fair project.

Find out whether matte or shiny nail polish lasts longer.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

This science fair project idea produces varying pitches of sound.

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project teaches students about wilting and browning of salad greens.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.