Are red apples really sweeter than green apples? The objective of this science fair project is to test the theory with quantitative evidence.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

With a clear bottle and a few plastic straws, you can easily make a hummingbird feeder and demonstrate the effects of atmospheric pressure at the same time!

The goal of this science fair project is to demonstrate current methods of detecting counterfeit money, in particular counterfeit detection pens.

In this project, the affects of vitamin E are observed on a rose petal.

This science fair project determines which type of physical activity most improves memory.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

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.

This science fair project idea explores whether the types and brands of faucet filters are relevant to their performance.

This science fair project idea will be examining oxidation and acid rain

This science fair project idea examines which type of insulation holds in the most heat.

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

This science fair project idea explores the different properties of matter.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

Teach your child to dye eggs with natural ingredients from the grocery store. From pink to gold, these eggs are perfect for hiding, hunting or simply munching.

The project idea is to establish whether it is easier to memorize words with fewer syllables and to understand how memory works.

Devise list of randomly chosen words, test how many words volunteers can remember. Compare results of adults and children. Which have better memories?

Check out this cool science fair idea on why hard fruits become soft and learn how to compare the sugar content between ripe and unripe fruits.

Examine how the tire treads of a bicycle affect its rolling frictional force. Change tires, test speed performance on different terrains.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project idea is develops a modern interior lighthouse design and encourages lighthouse preservation and restoration.

Science fair project that explores the variety of webs that spiders weave and collect specimens for identification.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

In this investigation, an oil spill is simulated in a jar to observe the damage that oil spills have on the ocean and ocean life.

The project idea is to understand how sugar effects brain chemistry.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This science fair project idea designs a unique, eco-friendly living space and encourages advances in green architecture.

An home science experiment for older students that teaches about the science behind heat.

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.