Teaching apparatus with system for repetitive review of information

Apparatus for enabling a reviewer to review items of information to be learned by the reviewer in accordance with a prescribed routine of repetitive review of a plurality of information-bearing elements, each element carrying an item of information to be reviewed, the apparatus and routine ensuring a more frequent review of unlearned items as compared to learned items during the course of the routine, said apparatus comprising:

• classification means for defining a plurality of grades, the grades being arranged in a given sequence from lower grades to higher grades and for defining classes within the grades, the number of classes within each grade being greater in the higher grades than in the lower grades;
• and
• manipulation means for enabling the review and successive grouping of the elements within groups of prescribed classes and grades in accordance with one of two choices made by the reviewer upon each review of the item of each element, the choices being based upon learned items and unlearned items, said manipulation means including grouping means for effecting said grouping of the elements in response to each choice so as to determine the frequency of review of the corresponding item subsequent to that choice as the element carrying that item follows the given sequence through the grades and classes to enable a more frequent review of unlearned items as compared to learned items during the course of the routine.