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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This science fair project investigates why the number of visible stars changes from place to place.

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

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

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

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 examines which type of insulation holds in the most heat.

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

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

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.

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 determines the most effective method of preserving food.

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project idea produces varying pitches of sound.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

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

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

This science fair project idea examines whether boys and girls differ in reflexes.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Find out whether a longer airplane will fly farther or a wider paper airplane.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.