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

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This science fair project idea identifies clouds as a means of predicting the weather.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

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

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 how color affects temperature.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

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

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

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

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

This science project teaches students to classify different shapes of leaves.

Using a toy race car kids create a visual model of the Doppler Effect.

In this project children practice the scientific method while playing with puffy paint.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This science fair project idea compares biodiversity between drops of water.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

In this science fair project, students use the streak test to tell minerals apart from each other.