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Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

Check out this cool middle school science fair project idea to determine if shopping carts are really carriers of harmful bacteria.

Make an elegant Mother's Day card to celebrate the love and work in raising kids.

Before digital cameras, before Polaroids, there was the original pinhole camera. Build a pinhole camera and see what true vintage photography looks like!

2011 VIRTUAL SCIENCE FAIR ENTRY: The objective of this science fair project is to develop a microcontroller and circuit that can conduct electricity.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

Here's a guide to starting a community clean-up project from scratch.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Read on this high school science fair project idea to get basic information on the process of heat transfer and the conditions under which the transfer occurs.

Students will investigate the illumination durations and intensities of different luminous substances of different colors of the spectrum.

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

Research hemispheric brain dominance in order to determine if you have a dominant side. Test foot, ear dominance. Record observations.

Research what is known about Alzheimer's disease and its treatment, and then prepare a script for television to educate the public.

Teach your child Morse code, and a little bit of history that she'll pick up in a flash!

Determine whether the application of Febreeze will lower the bacterial count.

Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

Get a cool science fair project idea for middle schoolers on the effect of adding sugar to the growth of green plants.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

Get a cool science project idea on a photovoltaic cell and explore the various factors that affect the energy output of the photovoltaic cell.

Determine the efficiency of multi-tasking by comparing how long it takes students to complete different tasks. Collate data, complete Summary Chart.

This project examines germs and their spread in households. The goal is to learn how to stop the spread of germs and other diseases.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

Study emulsifiers and learn how they are used in food science, medicine, soaps and cosmetics. Identify which materials are created using an emulsifier.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

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 identifies the nature of ionic and covalent bonds and determines how ionic and covalent compounds differ.

This fun middle school science fair project idea explores the process of respiration and determines whether boys and girls have the same lung capacity.