This document is the ONLY thing you will need in grades K-5 to identify exactly where a child's number sense is breaking down. The assessment includes kindergarten, first, and second grade skills children should have mastered to be successful in the rest of math.
Have a child going through RTI? This assessment will guide you through their pitfalls and allows for a great baseline.
Can't figure out where to start with a child that is not meeting grade level expectations? This assessment will pinpoint where to begin.
This is a verbal assessment only requires a few manipulatives and some of the attached documents.
I have found this amazingly beneficial in moving kids forward at a much faster pace.