This science experiment tests if dog saliva can really help heal wounds.

This experiment tests which gender is better at catching how a magician performs his tricks.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

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.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This science fair project idea examines whether boys and girls differ in reflexes.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

Learn whether writing things down really makes things easier to remember.

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

This science fair project idea investigates the difference in reaction times between boys and girls.

Check out this cool science fair project on identifying rocks and minerals for kids.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

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.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

In this design challenge, your child will make a bottle rocket using typical household items.

This science fair project idea examines the reason boats are shaped and engineered.

Construct batteries that make electricity from fruits with this fun science fair project.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.