Details are given of a seven-diget coding system used to analyze instructional materials in elementary school mathematics. Four variables are analyzed: the first four digits of the code identify a mathematical concept or skill; the fifth digit identifies the highest cognitive level expected of the student in completing the task; the sixth digit…

The reliability of coding problems associated with observation studies is discussed. The purpose is two-fold: a) to examine coding reliability by applying the profile method to two coding occasions separated by a lengthy time interval with the object of determining both within-occasion reliability (agreement) and between-occasion reliability…

The initial phase of a project to design a policy and procedures manual for the internal use of the Community College of Denver (CCD) resulted in the development of a taxonomy with a numeric codification scheme for all facets of CCD operations to organize this manual. Three factors were considered in establishing broad classifications to cover…

Video- and sound-tape recordings of 96 lessons in one Finnish school were analyzed using the Bellack Classification System. The lessons were composed of Finnish, arithmetic, civics, drawing, religion, and music for Grades 3 and 4. During the coding process, it was found that the Bellack system was not very suitable for describing instruction at…