'Area, weight, and volume record sheet' (2 fold p.) as insert. - Based on a Schools Council research project on the development of scientific and mathematical concepts in children between the ages of 7 and 11 at the University College of North Wales, Bangor, from 1968 to 1973. Project director: Joseph Rogers.
Area, weight, and volume : monitoring and encouraging children's conceptual development by Diana Bell. ISBN 0174230613. Published by Nelson for the Schools Council in 1975. Publication and catalogue information, links to buy online and reader comments.