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Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

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

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

This science fair project idea explores whether talking to a plant will help it grow.

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.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

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

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

In this design challenge, your child will create a parachute for a small toy using typical household items.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.