Now you must actually design your experiment. (NOTE: Throughout this website we use the words "investigation" and "experiement" interchangeably .) This means you must come up with a step-by-step procedure for figuring out the answer to your question.

For example, let's say your question is, "What is the effect of temperature on crystal growth?" You will need to design an investigation in which you are growing crystals at different temperatures and measuring crystal growth.

Designing a good experiment means understanding Controls and Variables. Follow this link to learn more about them.

Don't forget to include in your Project Log how you designed your experiment!