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

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

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

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

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 fair project idea investigates the hardness property of minerals.

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.

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

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

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.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

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

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

Learn about this simple machine and make a pulley of your own to use for fun science trials.

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

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.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

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.