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Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

This science fair project idea produces varying pitches of sound.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Find out whether putting something on top of a plant will inhibit its growth.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

The goal of this project is to create an exciting topographical map out of dough.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This science fair project idea produces sounds by creating vibrations using different objects.

This project determines what category of person is most likely to be ticklish.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

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

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

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 science fair project idea determines if the temperature of rubber effects how high it bounces.

This science fair project idea explores whether white light can be separated into different colors.