You may be told to find journal articles for your class... but what kind?
Scholarly = Peer-Reviewed = Professional = Refereed = Academic
ProCon.org is a non-profit dedicated to presenting controversial issues in a clear, concise, pro/con format free of bias and partisanship.
This multi-disciplinary database has records for nearly 18,000 periodicals - journals, magazines, and newspapers - of which nearly 16,000 are peer reviewed. It provides full text for more than 5,000 journals, and you can use Journal Finder to locate articles that do not have a PDF readily available.