Bonnie EnnisBonnie Ennis is coauthor of Introduction to Representation (Grades K-2 and 3-5), part of Heinemann's Math Process Standards Series. A math teacher for twenty-three years, she is currently the coordinator for math instruction in the Wicoico County Public Schools. She is also an adjunct instructor at Salisbury University and a member of the Board of Directors for both the Maryland Council of Supervisors of Mathematics and the Maryland Council of Teachers of Mathematics. Read More Read Less