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Determine if picking up fallen food in 5 seconds or less prevents the transfer of bacteria from the ground.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Use a microscope in this experiment to learn about different kinds of "good bacteria" that turn milk into yogurt!

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

Study the effect of music on random rote memory. Examine the practical application of music in learning and education.

This science fair project evaluates the suggestibility of males versus females in copying the actions of those around them.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

This experiment evaluates if the temperature of the environment that you work in affects your ability to perform mental tasks.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Study blind spots, run experiments in blind spot detection, design an original blind spot experiment, test your design on volunteers

In this experiment you will become familiar with the properties of dry ice while creating interesting effects like ice bubbles!

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

Plant sunflower seeds , measure height, calculate average height, compare size and weight of heads. Interpret findings in detailed report.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Will people still feel hungry once they eliminate grains from their meal? Find out in this science fair project idea!

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

Kids make an electromagnet in this electromagnetic induction experiment to learn about induction, current, and the right-hand rule.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

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

This high school science fair project investigates if small changes in your diet alter the pH of your saliva.

This experiment explores the question of whether age and/or gender play a role in people's ability to remember dreams.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

Science fair project that demonstrate how abrasions are formed on rocks in nature and the variations between types of rocks.

Science fair project which uses a camera to observe the surface of a balloon in the moment of its explosion.

This science fair project idea compares whether ionic dryers leave hair in better condition than non-ionic dryers.