Teacher Created Resources is an educational publishing company founded by Mary Dupuy Smith, a classroom teacher. The concept behind this successful line is that they''re aware first-hand about teaching. All the products are "created by teachers for teachers and parents.". Give students that extra boost they need to acquire important concepts in specific areas of math. The goal of these "how to" books is to provide the information and practice necessary to master the math skills established by the National Council of Teachers of Mathematics. Each book is divided into units containing concepts, rules, terms, and formulas, followed by corresponding practice pages. 5th - 8th Grades. 48 pages.