A learning system is provided which includes a plurality of student units for use by students, a teacher unit for use by a teacher, and a plurality of master storage devices that store information reproduced by the student units. The learning system includes a computer for use also by the teacher that...http://www.google.com/patents/US6141529?utm_source=gb-gplus-sharePatent US6141529 - Learning system with random assignments, conferencing and modeling
