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Make a list of items that need repurposing such as e-waste, batteries and mattresses. Invent your own original repurposed design.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Science fair project which examines how stopping a tomato's ripening process using the enzyme ethylene effects the tomato plant and its reproduction cycle.

In this project students learn about the golden ratio and investigate if it can be used to predict people's assessment of beauty in others.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

Demonstrate and describe acid-base reactions of baking soda and baking powder by making pancakes.

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

The goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.

This science fair project idea investigates the relationship between memory and age.

Design an improvement for an existing website. Program improved feature, get website owner to implemement new design.

Test whether plants can grow without sunlight and water.

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

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

Science fair project idea examines different techniques for memorization. Analyze results of memory tests to determine which method is most effective.

This science fair experiment organizes made-up elements to simulate Mendeleev when he made the periodic table of elements.

This science fair project demonstrates the "power of conformity".

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

This science fair project idea demonstrates that plants give off water.

This science fair project idea explores whether dogs do look like their owners.

This experiment uses a voice recorder to monitor the progression of a message in the telephone game as it deviates from the original.