This is a really good technique to check for progress 

  1. Students  write down 3  question(s) on a piece of paper
  2. Give the students time to  ask each other their made up question
  3. If a student gets a question right then the questioner  signs the persons paper
  4. The Student with the most signatures win

The challenge is to make the questions as difficult as possible. This would make a good starter or plenary