Why is it recommended to start Dimensions Math by Third Grade?

Where can I find the Dimensions Math Placement Test?

My student has been using a different math curriculum. Can I switch them to Dimensions Math?

Which grades of Dimensions Math do you support?

Which Singapore Dimensions Math course should I assign my student? Which Singapore level should my student start with?

My student has been using Singapore Primary Math. Can I switch to Dimensions Math?

Is there a scope and sequence for Singapore Math Dimensions?