When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

This science fair project idea explores the egg's thin membrane.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Start your toy engines -- this is going to be a fast and friction-filled race!

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

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

This science fair project idea investigates if fats add to the flavor of food.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This science fair project idea investigates how magnetism can defy the force of gravity.

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

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.