I think your work is excellent. I particularly like the validation feature in the Numbers Game (Countdown).
I also love TPIM. Having moved to Egypt, teaching Sunday to Thursday, it raises an interesting conundrum for you (to adapt the timetable somehow)!
Keep up the outstanding work.
I have a register for sale on my website. Take a look.
Nick Marsh
#@*%!.everymathstopic.com