I poke paperclips through for children to easily manipulate and attach cards. This folder is for telling time. A Level 1bag has o’clock and thirty digital cards to match with analogue clock pictures. Level 2 is :00, :15, :30, and :45. Level 3 includes any minutes and Level 4 includes things like “quarter to”. Level 5 will match cards that say things like 10 minutes after 3:35, dealing with elapsed time. I simply have students bring a finished folder to me when complete and I check it and tell them whether or not they can go to the next level.