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.

Create your own cloud with an activity that will explain how important concepts such as evaporation, condensation, and precipitation work.

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

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

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

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 activity, children will let their imagination run wild as they design and build a new planet in the solar system.

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.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Create a self-portrait from natural materials in this collage craft activity!

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!

Engineers in training can get started with this simple wheel-and-axle construction activity.

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.