Can you do two trials in a science fair project, or does it have to be three?


You can do as many or as few trials as you want. Generally, the experimental data is better with more trials, so your project will be stronger. This particular project doesn't take very long to do, so three trials shouldn't be too hard. If you are doing a plant growing project, you may only have time for one or two trials, though.

Updated on March 14, 2018

Original Article:

Science Fair Project: Which Chocolate Melts Faster?
By Virginia Kearney