This paper advocates oral communication as one of the most effective methods of improving classroom instruction in all subjects. It focuses on the teaching of mathematics and science, where the grasping of concepts is essential to student learning. The paper provides a rationale for oral communication across the curriculum. Further, the paper describes a project to provide inservice training for elementary and secondary teachers which will focus on: (1) using oral communication to enhance the teaching/learning of mathematics and science; (2) using an integrative approach to teaching/learning in the mathematics and science curriculum; and (3) using content specific personnel from the areas of mathematics and science who also have expertise and training in the use of oral communication in the teaching/learning process. The paper identifies goals, objectives, activities, and evaluation techniques for the project. Seventeen references and an appendix containing workshop evaluation statements are attached. (SR)