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Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

In this science fair project, students determine whether a bean plant grows faster and taller using a traditional soil planting method or hydroponic method.

Science fair project which helps you determine your latitude by using an astrolabe, which measures the angle between the North Star and the horizon.

Determine the effect of homework on academic performance. Collect grade info at the end of a semester, determine correlation between grades, amount of homework

Determine how good we are at direct and indirect observation.

Determine which material produces the strongest static charge.

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

Determine how we can separate the components of a solution

Determine which metal has the highest rate of conductivity.

Determine if left-handed people have faster response times.

Determine if gender affects the ability to identify different smells.

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

Determine if it is easier to memorize colors, words, words in phrases, pictures or numbers. Determine at when retention rate in each category is the best.

Determine whether the relationship between a personâs armspan and height are genetic.

Determine which video game elevates the heart rate best and burns the most calories.

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

This project examines various algorithms to determine the ideal algorithm for a strategy game.

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

This science fair project idea identifies trees using a dichotomous key.

In this science fair experiment, high school students determine if all proteins denature at the same temperature.

Measure the densities of various fruits and vegetables to determine if there is a relationship between density and nutritional value.

The objective of this science fair project is to determine whether planaria reproduce asexually by regeneration.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.

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

This project examines the phenomenon of using a mirror to trick a person's brain into experiencing sensations in body parts not actually affected.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Determine how effective animal camouflage is by simulating it in an indoor and outdoor setting.

Determine whether people can actually taste the difference between âhealthyâ cookies and the traditional version.