This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

The objective of this science fair project idea is to determine whether frozen vegetables have more nutrients than canned vegetables.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

This science fair project idea measures physical dexterity as a function of temperature.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Determine whether fresh vegetables have more calories or less calories than canned vegetables.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

The purpose of this science fair project is to investigate which food wrapping works best to keep refrigerated and non-refrigerated foods from spoiling.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

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

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Can cells be frozen? This science fair project provides information to answer this question.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.