JBDad, we did the Singapore during school for DS5 about 15min a day M to F. We did not aleways do it, and many a time he did 30+. We added an incentive that if he finisshed a work book I would purchase him a large lego. It mostly worked well. 9Not sure about using incemtives) During the summer we are working at a slower pace. I somtimes wish I would have stuck with more structure, but I wanted to keep it fun. DS also seemed to prefer it if I was sitting with him. Somtimes he becomes very motavated and wants to do a lot of work, other times even 5 mnutes is to much.