Bring spooky season to life with this rigorous, high-interest Halloween History Lesson on the Celtic festival of Samhain — the true origin of Halloween. Students trace how an ancient fire-lit ritual evolved into a modern, billion-dollar holiday through reading comprehension, historical analysis, and CER writing. This lesson blends engagement + standards-aligned rigor. Great for high school, APUSH, World History, or ELA classrooms looking for a low-prep October activity that still hits conte