-34 Design The design chosen for this study was The Recurrent Institutional Cycle Design described by Campbell and Stanley (18:56). The advantage of the design stems from two important considerations: 1. It is effective for use in a situation where a training material is continually being presented to a new group of teachers. 2. It allows for experimental and control groups while not limiting treatment to any of the participants. The design may be graphically represented as follows: INSTITUTIONAL CYCLE DESIGN Group A X 01 Group B1 R 02 X 03 Group B2 R X 04 Group C 05 X Symbols X treatment (module) 0 observation instrument R random assignment Teachers who volunteered to use the module were assigned to three groups, A,B, or C. Group B was then further subdivided by using a table of random numbers.