mum2jj:Does anyone have any feedbacks for S.A.M. (seriously addictive math)? Sorry if this was asked before, but I did a search and nothing informative came out. Heard good things about JEI but their centres are quite few and rather out-of-the-way for me. Many thanks in advance for sharing! :salute:
you can log in their web site and take a look at their video to further understand their concepts

http://seriouslyaddictivemaths.com.sg/i ... wIfuu_NtwE