Comparative analysis of ten textbooks in biology at the secondary-school level, five on the so-called unit and five on the traditional chapter plan.

Thesis (M.A.)--Boston University, 1940 N.B.: page 68 is missing from this thesis. Page 83 appears to be missing, but we believe this is the result of misnumbering by the author, and no actual content is missing at that location.Briefly, this study was made for the purpose of comparing five recent biology textbooks based on the unit plan and five on the traditional chapter method in an effort to determine: a) the topics treated, b) the amount of space and the percentage of space devoted to each topic, c) the sequence of topics, d) the various methods of presentation of the topic, e) the number and types of illustrations, f) the organization of the contents of the textbooks, and g) the integration of chapter or units for each major textbook. [TRUNCATED