The RightStart Mathematics Level E Lessons and Appendix (2nd Edition) is a textbook published by Activities for Learning, Inc. It is designed for elementary school students with an intermediate level of mathematical understanding. Authored by Kathleen Cotter Lawler and Joan A. Cotter, Ph.D., this spiral-bound paperback book offers a comprehensive approach to teaching mathematics in English language. The second edition includes updated content and features to support a successful learning experience for young mathematicians.