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Check out this hot project idea to culture bacteria and determine if the claims about the anti-bacterial properties of curry and cinnamon are true.

This science fair project compares the allelopathic chemical produced by the Black Walnut tree to a commercial herbicide in stopping the growth of a shrub.

In this experiment two environments will be compared: a room with interior design that uses correct Feng Shui versus one with incorrect Feng Shui.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

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

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Will male or female hair grow faster? Find out in this science fair project idea!

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

The objective of this science project is to determine the length of time for different seeds to germinate.

In this design challenge, your child will create a parachute for a small toy using typical household items.

Determine which metal has the highest rate of conductivity.

Science fair project that measures the relative times it takes a plastic bag and a biodegradable plastic bag to decompose.

This science fair project investigates which of two learning modes most commonly used in school, visual and auditory, is better for information retention.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

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.

The purpose of this science fair project is to determine whether Green Bags, with or without refrigeration, are most effective in preserving food.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

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

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Science fair project that demonstrates that rotting food attracts insects that lay eggs on it.