Use this as a game:
-How to play: Students get in pairs. On the board have each groups names and a spot for them to add up their points. Students answer questions for points (Level 1 = 10 points, Level 2 = 20 points, etc.). If they answer incorrectly they lose 30 points. When they answer a question, they check with the teacher, then record their points on the board. They must answer a question from each level in order to move to the next one
Or, use it to help teach your students who are at varying levels.
These questions get harder as you go! (5 levels of questions included)