Although there are three main computer-assisted instruction (CAI) formats (drill and practice, simulation, and tutorial), tutorial format is particularly suitable to conceptual school subjects because this format: (1) explains the concept of the text; (2) tests the understanding of the topic; and (3) selects the next step of the subject. When a…

The choices involved in setting up an open learning system are discussed, and the case for the mixture of interaction and independence is established. Problems involved in effecting the synthesis between activities in which the student works alone and those which bring him into contact with others are detailed. (AF)