PolitiFact is one of the clearest tools available for teaching teenagers how to interrogate political statements instead of taking viral social posts at face value. Run by the non-profit Poynter Institute, the site breaks down claims made by politicians and public figures, assigns them a Truth-O-Meter score, and lays out the source documents right in the text.

Because the coverage focuses on active political battles, the subject matter naturally touches on heavy news topics. It works best as an open tab for 8th graders and high schoolers who are researching debate topics, writing civics papers, or checking whether an outrageous claim on their feed actually happened.