Teams-Games-Tournament (TGT) is an instructional mode consisting of three components: 1) teams, involving assignment of students in a classroom to a series of four/five-member teams; 2) games, consisting of a series of instructional or learning games, and 3) tournament, consisting of weekly game-playing sessions in which each student competes with two other students of comparable achievement level representing other student teams. This report describes the developmental effort which resulted in the production of TGT materials and teacher manuals for junior high school level biological and physical sciences, including the preparation of a learning objectives blueprint; construction of student worksheets and instructional games based on the learning objectives; formative evaluation of the materials; and material revision and dissemination. Appendices include the complete TGT life and physical science learning objectives and evaluation instruments and instructions for their use. (Author/JN)