Hi Valerie,
Ya had checked with the tutor just now, they are planning to have it on saturdays, but I believe will clash with my kids english lessons elsewhere. Will hope they will have weekday evening classes as well. For sakamoto it helps more onto the problem sum solvings, for this is what they claim to be. Hence think will be more applicable when they reaches P3. Currently the center getting them ready for their P1 maths, and so far had touched on mass, money, simple problem sums.
Hi cymk23, I think berries helps more for younger kids, for they are using fun way to teach chinese. For Tien Hsia think is more academic wise. Another place my friends sent their kids to is at Thomson Plaza, called Hua Cheng. Maybe you would want to check it out since the place is nearer to your house. Or you may want to check out with Ai De Bo Le, heard is in Bishan?