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In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

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

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

This biodiversity project examines the biodiversity in your own backyard.

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

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

In this fun activity, your child will create their very own solar oven to bake s'mores!

Discover whether a metal will expand under hot water.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

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

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

This science fair project idea explores the different properties & interactions of sugar molecules.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

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.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

Do you think heat can affect a plant's growth rate?

Test your friends to find out if you can replicate the placebo effect's incredible results.