Before explaining the Teach-Practice-Apply (TPA) model for instructional improvement, an overview is presented of three general factors necessary for effective instruction: knowledge of content area; knowledge of teaching and learning theory; and the ability to select and use appropriate teaching strategies. It is assumed that teachers using the TPA model are competent in each of these areas. A description is given of the components of the TPA. The Teach component is the part of a lesson that presents students with what they need to know. The Practice component of the lesson provides opportunities for students to "practice" what has been presented by completing work directly related to the lesson topic. In the Apply component of TPA, students begin to use the skill either with less teacher supervision or with teacher encouragement to use the skill in broader contexts. Discussions are given of how the TPA model may be used in student concept attainment, teacher demonstrations, problem solving, guided discussions, and simulations. The discussion of each teaching strategy is presented within the TPA format, and is accompanied by examples appropriate for elementary classrooms. A description is given of how the TPA approach may be used in further teaching strategies: learning centers, role playing, independent study, and small group work. The final chapter examines how the TPA model and the instructional strategies enhance student achievement, and offers suggestions for the teacher. Seventy references are citied in the bibliography. (JD)