The use of prepared diagrams in general botany at the college level is a controversial subject. There is a general agreement that their use is economical of students' time but some instructors maintain that prepared diagrams curtail the opportunity for critical observation by the students. This paper does not purpose to deal with the controversy but rather to illustrate certain methods of effective use. During a period of ten years the Botany Department at Iowa State College has been experimenting with the use of prepared plates in the general botany course. In the beginning, four detailed drawings were, furnished. The objective at this time was economy in student-time. These four plates were photographed at first but this method was too expensive for general use. Zinc etchings were subsequently made. The most economical and satisfactory method, however, was reproduction by planographing. Twenty-eight additional plates have been added during subsequent years, making a total of thirty-two prepared plates in the introductory general botany course. The use of completed set of plates has been under experimentation for the past four years.
Proceedings of the Iowa Academy of Science
©1939 Iowa Academy of Science, Inc.
Dietz, S. M.
"Teaching Aids in Botany, II. Diagrams,"
Proceedings of the Iowa Academy of Science, 46(1), 129-140.
Available at: https://scholarworks.uni.edu/pias/vol46/iss1/16