"Is temperature a factor. How tight should the rubber band be on the paper bags? Is any air allowed to get into the bag? Should the bags be in a cabinet?"
These are questions that can be answered as a part of your experiment, and should be explored and included in your report/results section.
I recommend rereading the experiment to find out why you use paper bags. How do the bags simulate the natural environment of growing potatoes? Why do they need to grow underground?
Also, please read the [b]procedure[/b] and[b] Background sections [/b]and it will tell you the growing conditions. http://www.sciencebuddies.org/science-f ... #procedure
. Why should you plant them in those conditions? Include your answer in your research section of your report--also, at the end of your project, you will need to analyze why you think the results happened the way the did: did temperature affect your results? Do you think the location of the bags affected your results? These are things you can talk about in your results section of your report.
The rubber bands keep the light out of the bags, so tie them as tight as you can to block any light. Also you will put them in a cabinet or other dark place.
Here are more resources about potato sprouting,http://aggie-horticulture.tamu.edu/arch ... otato.htmlhttp://www.growveg.com/growblogpost.aspx?id=180
According to this resource, sprouting can take 1-4 weeks with potatoes that have not been treated with a fungicide (to kill fungi).http://www.gardeningknowhow.com/edible/ ... tatoes.htm
Let us know if we can help you further or if you have questions about the information I've posted.