A description of the development of the print materials to improve the ability of learners to appraise critically educational research is provided in this report. The completed materials consist of the following: an introductory statement about the nature of criticism, a statement about the contents of the materials and suggestions for use, and nine case studies. Most cases consist of a research article, special notes intended to make the article more comprehensible, orienting questions to guide the learner, a "model" appraisal (answers to the orienting questions), learner responses, and the product developers' replies to these responses. Specifically described in this report is the selection of case study materials, conduct of the two stages of field testing, evaluation of the drafts of the materials by student users, and bases for revision of materials. Reproduction of this document has been made from the best copy available. (Author)