This document presents an updated version of a publication that originally appeared in print in 1970. The original document raised a number of issues and questions which, despite notable advances, are still problematic. In this revision, marginal notes up-date the original text with information concerning subsequent efforts to address raised…

Project LEM (Learning Experience Module), funded under Title III, Elementary Secondary Education Act, incorporates concepts of an open elementary educational plan, featuring: multi-age, multi-ethnic groupings, individually prescribed instructions, a "core" curriculum, differentiated staffing, and maximum space utilization. These…