At the elementary level, and in English, I've never seen anything that came close to the original Singapore Math [1]. There's your one-stop shop. (US Edition s

At the elementary level, and in English, I've never seen anything that came close to the original Singapore Math [1]. There's your one-stop shop. (US Edition since you're in Utah. US Ed converts spelling to US and some of the units to non-metric, so students practice with both metric and non-metric units instead of metric only. Standards Ed is just as good as US. It is same content as US Ed but reordered somewhat to match pre-Common Core CA system. I'm guessing Common Core is another re-ordering of the same "Primary Mathematics" content. If so, it should be equally good. They no longer use this in Singapore for reasons that relate to integration with their non-math curriculum, but that is not relevant to someone using this as a purely math curriculum.) [1] https://www.singaporemath.com/primary-mathematics-shop/ https://www.singaporemath.com/primary-mathematics-shop/