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What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

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.

Take a stab at 18th century American cooking with your kids by following this tasty recipe from one of the first colonial cookbooks.

Help your second grader celebrate the legacy of Dr. Martin Luther King with this rainbow table mat.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Help your child bring a bit of Halloween magic to school with a spooky ghost pen!

This experiment provides a graphic illustration of the chemical reaction that occurs when you activate a hand warmer.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Compare the ignition rates of various types of flame-retardant materials.

Science fair project that explore how compound motion works by examining how gravity is affected by horizontal force.

Science fair project which identifies the most effective insulator that you could use to make a winter coat by comparing how well cloth and cotton trap heat.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

This science fair project idea designs safe bicycle routes using GPS.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This experiment demonstrates the conservation and transfer of energy using a marble rolling over sandpaper.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

Monitor the impact learning how to play chess has an academic performance. Divide subjects into two groups compare GPA

Store bowls of fresh fruit in differently lighted environments. Contrast freshness based on appearance.

This project examines which style of central-air system filter traps the most particles from the air.

This experiment will explore if and where fractals can be found in the natural world.

This experiment examines if space objects become round after reaching a certain mass.

Demonstrate and explain holographic technology. Determine if a holographic image of a magnifier still magnifies the object beneath it. Explain the effect.

This science fair project idea explores whether a person's ability to see under very dim lighting conditions diminishes with age.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

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

This scavenger hunt game is simple, but it's fun, and it will arm your children with the directional vocabulary they should master in time for kindergarten.

Want to play publisher for a day? Become a book jacket illustrator for this creative and fun project.