Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

The project determines which laundry detergent is best for cleaning clothes.

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

Determine whether butterflies like to drink sugar water, salt water, or plain water.

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

This science fair project idea investigates if webbed feet help a duck (and others) swim.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

This science fair project idea determines the most effective method of preserving food.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

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

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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

Find out which kind of bubble wrap fares best when put in impact.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

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

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

The project investigates how water and movement affects erosion.

The objective of this science project is to determine the length of time for different seeds to germinate.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.