Reports some of the more significant generalized findings that have emerged from an evaluation of the Nuffield O-Level biology course materials and their use in secondary schools. (JR)

Describes Project Biotech, a program that utilizes the audio-tutorial principle to develop skill-oriented modules. The modules are self-pacing, independent units of instruction which concentrate on a few well-defined objectives and allow the student to learn at his own rate with minimal supervision. (PB)