Do you have go-to, super simple classroom games or activities that will work for nearly any subject or lesson for those moments when you have a few extra minutes ? Or games that you use regularly to review information? I'd love to find or create a list, as most games that I find online are for one specific teaching topic. Here's one I used while teaching abroad, often as a warmup activity. My classes had around 50 students, and this worked great for a large group: Everyone stands up. The teacher has either powerpoint slides with questions, or asks them orally. The first student to raise their hand to answer the question is called on. If they are right, their row of desks sits down. Another question is asked, and another student answers correctly. This time, their column of desks sits down. The game continues with questions and the teacher allowing row, column, row, column, to sit down. I would stop when only 5 students or so were left standing, so that no one person was singled out. A teacher whose classroom I observed in also had this simple activity for moments when the kids were waiting for something (like a computer that had frozen): Teacher announces there will be a mental math problem. Teacher might say 5 + 2 (pause) -3 (pause) x 4 (pause) + 2 (pause) -5 (pause) x 2. Then the teacher would ask "who thinks they have the answer?" A student would give the answer, and the teacher would say, "who agrees?" or "did anyone get a different answer?" Because she relied on the students to verify the correct answer, she didn't really even have to think about it, and could fix the computer / find a paper / address the issue of the delay as she spoke.