Six regional conferences designed to provide educational decision-makers and teacher-leaders with problem solving and calculator experiences, samples of materials, problem resources, strategies, guidelines, and summaries of research results, were held during 1980. The focus was on junior high and secondary schools, with a special emphasis on general mathematics. The purposes of the conferences were: (1) to describe and explore promising techniques for improving students' problem-solving abilities; (2) to provide direction on the effective use of the calculator in class; (3) to explore important curriculum options for general mathematics courses; and (4) to provide resources, describe techniques, and prepare participants for conducting in-service experiences in their own school systems on the above topics. A major portion of this document contains materials distributed to conference participants, and consists of papers compiled or written by the Conference Development Team. These papers were designed as resource materials for the participants to use when they conduct in-service activities for mathematics teachers at a later date and for participant use during the conferences. (MP)