Students learn about the Khmer Rouge by reading information from reliable links provided and completing a "puzzle" based on their answers that they find. If they find all of the correct answers, they can "crack the code" and complete the puzzle. The answer key, student worksheet, and website links are all provided. The activity can be pushed out through Google classroom or can be printed. Articles are all located online, so students will need internet access or the teacher will need to print off all of the articles.