Long, Calvin T. Mathematical reasoning for elementary teachers / Calvin T. Long, Duane W. De Temple. - 2nd ed. - Mass. : Addison-Wesley, c2000. - xx, 962p. : ill. ; 26 cm. Includes index. ISBN: 0321043332 Subjects--Topical Terms: Mathematics--Study and teaching (Elementary) LC Class. No.: QA135.5 / L85 2000