Five perspectives are identified for viewing inquiry: "Guiding Principles: (for example the antecedent-consequent principle), Inquiry Factors or logical steps in inquiry, Behavioral Objectives, Affective or Attitudinal Qualities, and Inquiry into Inquiry. Many components of these perspectives are enumerated, together with related student behaviors which would exemplify the components. Two examples of class discussion which illustrate inquiry into inquiry are given and analyzed in terms of strategy. The "interim summaries" of the Invitations to Enquiry from the BSCS "Biology Teachers Handbook" are printed as an appendix, as also is the paper (Mendel's "Experiments in Plant Hybridization") on which the class discussions were based. An extensive annotated bibliography on behavioral objectives and inquiry teaching in biology is divided into five sections: Behavioral Objectives - Some Considerations, The Inquiry Process, Inquiry as a Teaching Strategy, Preparing the Teacher for Inquiry, and Evaluating the Inquiry Process. (EB)