My oldest has done both common core math(kinder and 1st grade) and Singapore math(2nd through 5th). Both emphasize understanding over procedure and repetition. I do think in the long run it's more valuable since she has an understanding of concepts instead of just having things memorized. She never really her learned her multiplication tables as it was never required, her homework is real world word problems that challenge even me. I think it's much more valuable than rote memorization that traditional math education focused on. It's just a lot of work from both the teacher and the student. That's the challenge teaching these types of math educations over traditional math.