Clements, Douglas H. Math in my world / Douglas H. Clements [and three others] - New York: McGraw-Hill School Division, c1998. - xiii, 658 pages : color illustrations ' color photographs ; 28 cm. Includes index. ISBN: 0021094993 Subjects--Topical Terms: Mathematics--Study and teaching (Elementary). Dewey Class. No.: CIR 510 C626 1998