In the course of carrying out the technical tasks of the school, teachers encounter common problems that do not impose on those in managerial roles. School organizations are typically structured in such a way as to prevent the information sharing and processing necessary to confront these problems. A collective decision-making structure for…

Reports part of the results of the Design, Development, and Assessment in Mathematics Education Project that tested the booklet on descriptive statistics called "Data Visualization" in six experimental algebra classes in Whitnall, Wisconsin. Describes examples of problems presented, use of cooperative learning during instruction, and…