Prove that one Jew was gassed by Nazi Germany. For any gassing, use a Nazi document to show each of the followng:
the location of the gassing,
the duration of the gassing,
the date of the gassing,
the hour of the gassing,
the preparations for the gassing,
the physician present at the gassing,
the perpetrator of the gassing,
the nature of the victims of the gassing,
the number of the victims of the first gassing,
the persons who removed the corpses,
the beginning of the removal of the corpses,
the duration of the removal of the corpses,
the fate of the corpses removed,
the technique of the gassing,
the duration of the agony of the victims,
the number of Zyklon B cans used for the gassing,
the name and ID number (if applicable) of one Jew killed in the gassing.
You may have to search and research, but once you learn some good sources and methods, you should have success. In addition to searching on the Internet, you also need to make best friends with the reference librarian(s) in your local or college library. Libraries these days subscribe to enormous research databases, and they are often more useful than Internet searches. Ask your librarian if you have access to EBSCOHost -- it has several databases within it, including a huge one for academic research.
For Internet searching:
http://hanlib.sou.edu/searchtools/
At this webpage, you can go immediately to the search sites (first three columns across the top) -- or even better you can scroll down until you see the section called HOW TO SEARCH THE INTERNET. Those are the links to start with. You'll not only learn how to come up with good search terms, but also how to evaluate the webpages you get as results. Some will be good and others will be garbage. You need to know how to tell the difference.
My favorite way to search is to go to Google's advanced search page http://www.google.com/advanced_search?hl=en and put my search words or phrases into the first or second search box (either "all the words" or "exact phrase"). Another is to start out at http://scholar.google.com. However, there many other strategies for searching you can use, and the HOW TO SEARCH THE INTERNET section will help you best.
Learning to use Google or other search engines can save you time and help you learn to find information efficiently. Here are some websites that can teach you how:
http://www.lib.berkeley.edu/TeachingLib/Guides/Internet/FindInfo.html
http://hanlib.sou.edu/searchtools/searchtips.html
http://www.pandia.com/goalgetter/index.html
http://websearch.about.com/mbody.htm?once=true&COB=home&PM=112_100_T
... and one to help you judge whether a particular website's information is worth your time:
http://hanlib.sou.edu/searchtools/evaluate.html