Blackwelder, Sheila Kyser Science for all seasons science experiences for young children Sheila Kyser Blackwelder - Englewood Cliffs, N.J. Prentice-Hall 1980 - 270p. 22cm - A spectrum book . Bibliography: p.255-259 ISBN: 0137952864 0137952783 (pbk.) LCCN: 80-12518 Subjects--Topical Terms: Science--Study and teaching (Primary)