Lehmann, Ingmar H. books & textbook
100 Commonly Asked Questions in Math Class: Answers That Promote Mathematical Understanding, Grades 6-12
Posamentier, Alfred S. Farber, William L. Germain-Williams, Terri L. Paris, Elaine S. Thaller, Bernd Lehmann, Ingmar H.
Corwin /2013-09-27 Paperback / 232 Pages
isbn-10: 1452243085 / isbn-13: 9781452243085