Download or read book Essential Math Skills: Interactive Inventory for Pre-K through Grade 3 written by Bob Sornson and published by Teacher Created Materials. This book was released on 2014-09-01 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn about essential math skills needed by students to ensure deep understanding of key math concepts. Bob Sornson created this grade-by-grade system for tracking the development of early math skills.