Describes the evaluation and revision of the O-level Nuffield chemistry student and teacher curriculum materials. Includes a discussion of the rationale for the evaluation process and the methodology used. (JN)

Laboratory exercises from five chemistry curricula were examined to determine organization (integration of laboratory work with other parts of a course) and tasks required of students (assessed in terms of inquiry skills and behaviors required for the laboratory work). Implications and suggestions for instruction are included. (Author/JN)