Slater, J.D. Mathematics through action : stage 1B / J.D. Slater ; illustrated by Hewitt Taylor, Steven Curphey, John Radford. - London: Arnold, 1971. - 120 p. : ill. ; 23 cm. ISBN: 0560001835 Subjects--Topical Terms: Mathematics--Study and teaching (Elementary) Dewey Class. No.: 372.7044