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Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

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

Plants and light seem to be good buddies, but how far does the friendship really go?

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

In this activity your child will create their very own marble maze!

In this project children practice the scientific method while playing with puffy paint.

In this experiment you will replicate the mummification process by making a hot dog mummy.

Do different types of oil mix or stack? Find out in this science fair project idea!

In this activity, your child will be challenged to make a tower using paper cups.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

Science fair project that examines condensation and the conditions needed in order for dew to form.

In this science fair project, students use the streak test to tell minerals apart from each other.

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

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

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.

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

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.