A filmstrip with associated audio track has been developed to cover the major planning steps in the development of a measurement instrument such as a test or questionnaire. The filmstrip addresses the following six questions: Why am I testing? What should I test? Whom am I testing? What kinds of questions should I use? How long should my test be? and How difficult should my test be? A set of supplementary materials cover the following issues: learning how to develop tests, obtaining information about tests, preparing a test plan, kinds of test questions advantages and disadvantages, reliability, and criterion-referenced tests. The supplementary materials provide an expanded treatment of some of the issues raised in the filmstrip, but their primary function is as a guide to appropriate literature for those individuals who are seeking an intensive treatment of topics related to their particular interest and needs. The target audience for the filmstrip and supplementary materials includes students in introductory educational psychology, measurement, and research training courses as well as teachers, administrators, or other educational personnel engaged in inservice training. No previous training in measurement is assumed. (Author)