Learn about essential math skills needed by first graders to ensure deep understanding of key math concepts. Bob Sornson created a system for tracking the devel

Learn about essential math skills needed by kindergartners to ensure deep understanding of key math concepts. Bob Sornson created a system for tracking the deve

Learn about essential math skills needed by second graders to ensure deep understanding of key math concepts. Bob Sornson created a system for tracking the deve

Learn about essential math skills needed by third graders to ensure deep understanding of key math concepts. Bob Sornson created a system for tracking the devel

Pressured by standardized testing and rigid pacing guidelines, many schools are forced to cover too much content too quickly, without being able to meet the nee