Hi, I am a Resource Room teacher and work with a student who is several points above meeting the criteria for life skills. The student will be going to middle school next year and is at about a 2nd grade math level. I have spent a month working on coins with him. He is still inconsistent with counting coins (even when given manipulatives and coin id visual aids) and certainly cannot exchange coin groups without someone walking him through it step by step. I feel like money is an important skill for him to learn, but I also am questioning if it is time to move on and try something else? How long is too long to spend on a subject? How do I determine when to throw in the towel on a unit and move on?