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

This science fair project idea explores whether the color of surroundings affects human mood.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Determine the effect of reading aloud on memory skills. Prepare a list of randomly chosen words, ask volunteers to recall as many as possible from the list.

This science project teaches students to classify different shapes of leaves.

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.

This science fair project idea explores which kinds of earplugs are the most effective.

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

Science fair project that designs a video game that requires players to use relevant skills.

The goal of this science fair project is to determine which cheese grows mold the fastest: Vermont Cheddar, American, Brie, or Camembert?

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

This project examines whether people's taste perception is influenced by what they see.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

Are you able to endure long periods of exercise? Find out if snorers can exercise longer than non-snorers.

This science fair project idea investigates how color affects temperature.

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

Discover whether people can distinguish what a person looks like just by listening to their voice.

Check out this cool middle school science fair project idea to find the difference between organically grown and commercial brands of foods.

In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!

Research Earthship buildings. Draft a unique architectural design that repurposes used, discarded radial tires. Build scale model of structure.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Science fair project that builds a magnetometer and demonstrate its uses.

Study and categorize the functions and types of genes. Run gene experiments chosen from links. Analyze data, explain ideas in a detailed report.