Multiple-choice test questions can be confusing. Here's a toolbox of tricks and strategies to help your teen become a multiple-choice master.

Determine how good we are at direct and indirect observation.

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

Study structure of the lens found in the human eye and determine whether it is concave or convex. Prepare a ray diagram, formulate hypothesis.

Formulate a hypothesis and use the scientific method to determine the guess what is hidden in a box. Test abilities of volunteers, without opening box.

introduction to organic chemistry. study what happens when polymer molecules are mixed with borax solution.

Check out this science project idea that will have your kid investigate how dots (also known as pixels) are used to create digital photographs.

Investigate the advantages of the use of ceramics in engines such as the tiles used in Space Shuttle. Use iron filings and magnets.

Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

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

In this project children practice the scientific method while playing with puffy paint.

Study the physical and chemical changes that make hair curl or straighten. Study ingredients, function of chemicals like thioglycolic acid.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Study emulsifiers and learn how they are used in food science, medicine, soaps and cosmetics. Identify which materials are created using an emulsifier.

Science fair project that examines various techniques for removing wrinkles from polyester garments to understand why polyester garments become wrinkled.

Identify vitamin C in fruit juices and to determine which of the following juices contain the most vitamin C

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.