The Effect of the Use of a Textbook as Compared With Supplemental Material in Teaching Biology
The Problem and Its Background
Biology in the Secondary School Curriculum
There is ample evidence, both direct and tacit, that biology has justified its place in the curriculum of the secondary school.
Among the direct evidence is that stated by Heiss, Obourn, and Hoffman1 as follows:
"On the Senior High School level, general biology is well established as a tenth grade course and is usually offered as an elective for each of three years. There is a considerable body of evidence available that seems to indicate that both general science and biology are going a long way toward meeting the needs of the young people. Improvement is always possible and no doubt these courses are being improved from year to year."
This statement would seem to indicate that the course in biology has not only justified its place in the curriculum, but also has been allocated to a fairly definite position in the chronology of the curriculum.