I like the format and explanation in this counting problems handout. Plus BONUS answers are included.
The website that it refers to has videos and handouts that seem to be appropriate. The fellow is Australian or something so the terminology is slightly different.
Thank you for sharting this! I attended a ERLC workshop led by him on Circle-ometry --- all things trigonometry and it was fantastic. I have tried to attach his document but it is too big. Any ideas how I can share it for anyone? I went on his website and I can seem to find it so don't know if he posts these?