Abstract: A hand-held calculator has a transparent window carrying a liquid crystal display as well as transparent number and function key locations such that when placed on an overhead projector, the calculator can be used to demonstrate to a classroom of students all operations performed in a sequence of mathematical operations. The plastic casing of the calculator has one or more small holes passing through the casing at corners, so that a string or line can be used to tether the calculator to the overhead projector, preventing damage to the calculator from a fall to the floor. A further feature of the calculator is a protrusion or foot at each corner of the back of the calculator casing, for holding the back surface of the calculator slightly above the light platform of the overhead projector, for cooling of the liquid crystal display by air passing between the light table and calculator.

Abstract: A system and method are provided for building a help function in the form of a tutorial that physically demonstrates to an end user the function that the end user wants to understand. The invention includes a script language that includes tags or commands that the information developer can use in demonstrating the application program and providing tutorial information to the user. The system includes an interpreter that interprets the script language.

Abstract: This present invention relates to displaying devices for instructive purposes. One object of this invention is to provide a composition of translations or a combination of rotation and translations in two orthogonal dimensions, to locate superimposed picture images to any selective location with respect to stationary pictures. The devices of this present invention are used to visually compare intelligence or information in the form of pictures, diagrams, or graphs for instructive reasons.Another object is to provide animated motion of pictures, diagrams, or graphs for teaching aid in education and in mathematics in particular. This invention provides animated transformation of geometric diagrams or Algebraic graphs to visually demonstrate the proofs of geometric theorems or to find instantaneous solutions of geometric problems or algebraic problems graphically for curricula in geometry and algebra.

Abstract: This invention relates to a finger acupuncture needle puncturing position indicating apparatus in which a code reference book of symptoms (103) describing in detail symptoms of affected regions of a human body is attached to a side of the interior surface of a cover (503) on which human body anatomical charts (101) showing proper code numbers for each region are also mounted; underneath the book is a needle box (403) with a door (402) capable of storing a number of needles (401); displayed on a lighted display panel (102) mounted on the body (502) of a case are the palm and back of a hand indicating needle-puncturing positions; and mounted on one side of the body (502) of the case are a keyboard (201) with a number of keys for inputting code numbers from the human body anatomical charts (101) and the code reference book of symptoms (103) as well as a display button (202) for outputting these codes.

Abstract: An efficient economical process is provided to produce an intricate impressive display with outstanding marketing and advertising appeal. In the process, multiple images are formed, such as on a central processing unit, the images are masked and striped, and portions thereof are superimposed. The superimposed masked images can be printed on an underlying back web. Transparent rods, a plate lens, a cluster of anamorphic lenses, or a grid, can be placed in front of the back web to provide a special display which has the illusion of animation as the angle of sight changes. The special display can be used to provide an attractive container, cup, glass, mug, bottle, package, box, lampshade, magazine, comic book, paper back book, hard bound book, cover, page, envelope, greeting card, compact disc case, laser disc case, brochure, or pamphlet.

Abstract: An electronic library which comprises a user interface such as a computer screen, a speaker, a mouse and/or a keyboard; a processor for handling communication with the user and for responding to user requests; and a data store. The data store maintains scanned segments of video data, audio data, or both, and translated replicas of the scanned segments. Searching for specific data is performed by perusing through the translated replicas, but the information that is provided to the user is primarily the scanned segments themselves. The translated versions contain the immediately translatable version of the displayable information and processed information that forms various aggregations of the displayable information. This processing imposes a syntactically logical structure on the displayable information.

Abstract: A virtual school user interface running on networked personal computers for providing administrative and instructional functions to users in a scholastic environment. A user selects among grouped system functions by accessing one of a plurality of rooms within a school representation displayed on a video screen, with the networked virtual reality presenting the user as a real-time entity within the virtual school so that the user can interact with other users and system elements. A learning path editor is also provided for allowing users to author student curriculum sequences using graphical icons. A guidance tutor is further provided for coaching a student by displaying a guidance message on the video screen when so indicated by an instructional context. A courseware scheduler is further provided for delivering specific courseware to specific computers during specific time periods. A system monitor is further provided for gathering information in real-time on the state of each computer.

Abstract: A learning device is provided with an information processing unit, a keyboard for inputting characters, an information storage medium for storing a variety of data, a CRT display for displaying characters and/or figures, and a mouse for designating a specific location on the CRT display. The information storage medium stores a plurality of learning materials of which respective learning items has a tree structure. The information storage medium also stores the tree structure of the learning items, the name of each learning item, the names of learning items positioned at next upper and next lower levels in the tree structure, and the name of a learning material corresponding to each learning item. A learner can instruct the CRT display to display a portion or all the tree structure using either the keyboard or the mouse. Also, the learner can alter the display range according to his intention.

Abstract: A system (10) for simulating an operating environment, such as aircraft cockpit for use in training. The system (10) includes a video storage device (46) for storing and transmitting an image of the operating environment. The video storage device (46) is coupled to a video monitor (58) for displaying the stored image. A graphics generator (54) generates an overlay image simulating the appearance of displays and manipulable controls in the operating environment in a plurality of its manipulative states. The graphics overlays may be manipulated by means of a touch sensitive screen (64) to simulate the operation of the manipulable controls. The system also includes an interactive system (12) for authoring and editing the overlays as well as the simulation process.

Abstract: Trading cards are made interactive with the user by concealing under a coating the secondary indicia portion of an image comprising both primary and secondary indicia, and selectively altering the coating to reveal the secondary indicia in the presence of the primary indicia to complete the image. A thermochromic coating material responsive to temperature change from ambient temperature, as by rubbing the coating with the fingers, enables the local exposure of the secondary indicia.

Abstract: A portable sales promotion apparatus for electronic systems comprises electronic control modules and electronic output devices that are transported from the retailer's supply storeroom to the outside site of the customer's parked mobile vehicle where they are placed in the passenger area of the: vehicle for demonstrations of system performance, for experimental determination of any modifications required of the vehicle for installation of the system, and for the subjective evaluation of the customer or occupant of the vehicle prior to execution of a contract for purchase of a system to be installed. The demonstration vehicle, operable by the salesperson, is a roll-about cabinet that houses supporting electronic modules of the systems being demonstrated, an independent power supply, and control accessories subject to operation by the salesperson for conductiong the demonstrations.

Abstract: Apparatus and method are disclosed for demonstrating autorotation in conjunction with superconductivity. First and second discs constructed of superconductive materials are stacked one on top of the other in an insulated container. A disc-shaped permanant magnet is positioned generally in the center of the upper superconductive disc. Liquid nitrogen is poured into the container, and after the temperature of the discs is lowered to a temperature at which they become superconductive, the magnet is levitated by the Meissner effect and begins to rotate due to the stacked configuration of the superconductive discs.

Abstract: A reusable pinata (10) for dispensing tokens or objects (40) that have a predetermined configuration to fit cavities (52) in boards (50). The objects are dispensed when strings (36) are pulled that open the closure members (32) and (32') that are pivotally mounted to the bottom of a hollow container (30). The container (30) is suspended from a stand assembly (20) that includes a base (22), an upwardly extending pole member (24) and an arm member (26) that is substantially perpendicular to the pole member (24). A timer (60) is mounted to the pole member (24).

Abstract: A cognitive speedometer for the assessment of cognitive processing speed includes a display screen, a keyboard, and a processor for generating original data and displaying on the screen the original data for copying by a user on the keyboard. Only if the user copies the displayed original data correctly, the processor generates and displays on the screen different data on which the user is to perform a unit cognitive operation and then enter the resultant data on the keyboard, the resultant data having the same characters as the original data. Only if the user enters the correct resultant data, the processor determines the time required for the user to perform the unit cognitive operation.

Abstract: An improved text scanning apparatus is disclosed. A support structure retainably holds a sheet of material to be scanned in snug planar engagement with an upright copyboard support surface. Light sources selectively enable illumination of the sheet from overhead or through the sheet. Horizontally and vertically movable masks overlie the sheet material and traverse over the material in precise operator preselected incremental timed manner, to highlight the text according to the operator's selections. The system provides for full automatic, semiautomatic or manual modes of operation.

Abstract: A kit and method for visual demonstration of courtroom and trial principles as related to testimony and procedures for the elicitation of such testimony from children, in particular. The kit includes a horizontal base member representing a courtroom and a plurality of interrelated figurine and fixture members, and may include means to removably engage the fixtures and figurines with the base, such that apprehension and concerns over courtroom appearance and testimony are alleviated through assembly and manipulation of the kit components.

Abstract: An efficient economical process is provided to produce an intricate impressive display with outstanding marketing and advertising appeal. In the process, a grid and multiple images are formed, such as on a central processing unit, the images are masked and striped, and portions thereof are superimposed. The grid can be printed on a front web. The superimposed masked images can be printed on an underlying back web. The display produced by the special process can be used to form an attractive sign, billboard, educational game, toy, box, wrapper and other packaging.

Abstract: A computer assisted instructional information delivery system having at least two stations. One station for an instructor and one or more stations for students. An interactive monitor is positioned in each station. Each interactive monitor displays instructional information in visual form as inputted by a stylus or light pen on the interactive monitor. A network communication system operated by a central processing unit and corresponding software, communicates the instructional information from the stylus as inputted on one of the interactive monitors and selectively displays the instructional information simultaneously and concurrently onto any or all of the interactive monitors of the stations.

Abstract: A calculator (20) or other computing device uses a remote display (22) set upon an elevated platform (26) above the base (12) of an overhead projector (10). Light through the base lens (14) is passed through the display (22) and is enlarged by lens (30).

Abstract: An efficient economical process is provided to produce an intricate impressive display with outstanding marketing and advertising appeal. In the process, multiple images are formed, such as on a central processing unit, the images are masked and striped, and portions thereof are superimposed. The superimposed masked images can be printed on an underlying back web. Transparent rods, a plate lens, a cluster of anamorphic lenses, or a grid, can be placed in front of the back web to provide a special display which has the illusion of animation as the angle of sight changes. The special display can be used to provide an attractive sign, billboard, educational game, or toy.

Abstract: A portable desktop kit for demonstrating principles relating to carpet care includes a carrying case divided into a first compartment and a second compartment by a barrier. At least one tube is slidably secured by the barrier for representing an erect strand of carpet in a demonstration position. The first compartment is divided to at least two carrying cavities, one of the cavities being sized to receive the tube when the kit is arranged for carrying. The first compartment also contains demonstrating means for describing the construction of carpet while the second compartment contains means for soiling a portion of the tube for demonstration purposes. The second compartment also contains means for cleansing the soil from the tube. Methods for using the kit are also disclosed.

Abstract: This relates to a note/memo board which is particularly constructed to be associated with an information display device. The note/memo board is provided with an opening for receiving a housing of the information device and is removably secured thereto by way of fastening means which are releasable. More specifically, the housing is provided with strips of VELCRO which are engaged by other strips of VELCRO carried by a leg of an angle bracket which is adjustably secured to the rear surface of the note/memo board. The note/memo board is of a varied construction which includes a front member formed of a wide variety of materials suitable for either receiving push pins or presenting a writing surface. The display surface of the memo/note board can incorporate different surfaces such as one section for receiving push pins and the other section defining a writing surface depending upon the desired function.

Abstract: In a method for effecting evaluation of consumer products by test panel members, the panel members receive a set of test materials which include an evaluation set of products, a video tape containing a video presentation of members of the evaluation set and means for ordering products free of charge. The choices made by the panel members provide information as to preferences between test products and established brands. The evaluation process is repeated over several cycles to provide information regarding long term purchase habits and product sustainability.

Abstract: An educational play structure adapted for mounting on a card table so as to form a play enclosure for young children. The structure comprises a flexible panel which has four side panels which are releasably connectable to form the enclosure. Access to the interior of the enclosure can be obtained only by unzipping a pair of flaps. The play structure is adapted for mounting various play objects and educational materials such as letters, numerals and shapes.

Abstract: An apparatus for simulating a multimode meter having a pair of test leads, a function switch, and a range select switch is provided. The simulated multimeter apparatus is fed by digital display data signals and provides a numeric display representative of a number corresponding to digital data display signals. Further, the simulated multimeter apparatus is fed by a plurality of switch signals which correspond to predetermined locations of the function and range select switches and fed by an input data stream corresponding to simulated electrical parameter values, related to the values of the functions switch and the range switch, for converting the input data stream into the digital display data signals.

Abstract: A hand-held calculator has a transparent window carrying a liquid crystal display as well as transparent number and function key locations such that when placed on an overhead projector, the calculator can be used to demonstrate to a classroom of students all operations performed in a sequence of mathematical operations. The plastic casing of the calculator has one or more small holes passing through the casing at corners. Another feature of the calculator is an improved keyboard of relatively small domain size for each key, with a spacer grid on the back surface of the keyboard membrane panel overlay element, effective to provide pressure isolation of an active key from adjacent keys and also to prevent other pressures on the keyboard from causing mistaken entries. A further feature of the calculator is a protrusion or foot at each corner of the back of the calculator casing.

Abstract: The present invention relates to an improved rotational movement training device which includes a mounting board and a plurality of rotation devices which, when mounted on a mounting board, provide a training device which permits a user through experimentation to develop mathematical expressions and mechanical systems from elementary scientific facts and basic mathematics. The rotational devices includes gears or wheels of different diameters, pistons, torque levers, force and load pans, fulcrum-levers and devices to interconnect the wheels and pistons such as levers, belts, and adjustable spacers. The devices may be used in various combinations to develop and demonstrate mechanical movement concepts and expressions.

Abstract: Apparatus for training an operator in theory and practice of electrohydraulic control systems in accordance with a presently preferred embodiment of the invention comprises a plurality of electrohydraulic devices for performing hydraulic operations as differing functions of associated electronic control signals. A plurality of differing electronic controllers are each adapted to generate electronic control signals to operate at least one of the electrohydraulic devices. The electronic controllers bear indicia identifying the controller and associating each controller with corresponding electrohydraulic devices on the training unit. Each controller has a plurality of available input, output and control connections, which may be selectively interconnected with each other and with the electrohydraulic devices by suitable cables for configuring the controller and associated device in a multiplicity of differing operating modes.

Abstract: A display holder for displaying proposed arrangements of pictures, artwork, mats, picture frames, and the like, has a base support and a generally rectangular display base pivotally connected to thereto and a transparent rectangular cover/holding member pivotally connected to the display base to substantially cover the front surface of the display base with its corners aligned with the corners of the base. Guide lines on the front surface of the display base aid in strategically placing flat materials such as artwork, posters, photographs, mat corner samples, etc., on the display base. Clips on the cover/holding member allow flat materials such as mat samples to be releasably secured firmly against the cover/holding member. Flat materials are placed on the front surface of the display base and the transparent cover/holding member closed thereon and sample mat materials are secured on the front surface of the cover/holding member.

Abstract: A riding simulator whrein the basic stepping actions of a real horse is closely simulated. The riding simulator includes an artificial horse body, horse body supporting structures for circularly movably supporting the lower ends of forelegs and hind legs of the horse body, swing adjusting devices for driving the horse body supporting structures and for moving the horse body in both vertical and longitudinal directions, and phase adjusting devices for adjusting the phase difference between the vertical motion and the longitudinal motion of the horse body when the horse body supporting structures are driven. The riding simulator also includes provision for enabling the rider to give aids to the horse body so that the basic stepping actions of a real horse can be simulated.

Abstract: An simulated engine characteristic control system for transmission transient performance tests for automotive vehicles comprises a motor for driving an input shaft of the tested transmission, a pick-up for detecting revolution of the motor, a simulating circuit for simulating an opening angle of the throttle of the engine to be associated with the tested transmission or the intake manifold pressure of the engine, an engine characteristic generator for generating a torque command signal according to predetermined engine revolution/torque characteristic curves, in response to the signals from the pick-up and the simulating circuit, a torque/current transducer for transducing the torque command signal to an analog current command signal according to a predetermined torque/current characteristic, and means for compensating the current command signal in consideration of a torque component occurring at an axial moment of inertia of the rotating member of the motor during acceleration or deceleration of the motor, a

Abstract: A learning aid permitting the student to insert a worksheet into a rigid body having space between two planes. One of the plaens is clear permitting the instructor to mark on it, performing the work demanded by the underlying worksheet. The instructor's marking is erased and the student attempts the same task. The work sheet is secured in place either by (i) its natural mechanical tension with the two planes, or (ii) by an insert mechanism securing the paper either through electrical attraction or by a mechanical clip.

Abstract: A displayboard comprises sheets with a plastics foam core formed in situ between them. Edging strips having internal channels in which the edges of the board lie are mechanically connected directly to the sheets either by tongues that project out of the sheets into recesses in the sides of the channels or by the pressure of the foam core when being formed forcing parts of the sheets into the recesses. The edging strips have external channels serving auxiliary functions, e.g. securing the displayboard to wall brackets, securing a hinge joining a second displayboard, securing a pencil tray and carrying a pelmet containing a spring-loaded clamp for clamping papers against the edging strip.

Abstract: Devices for demonstrating the effect that eccentricities in a tire and rim can have when the combination is rotated having a circular member representing a rim mounted for rotation about a center different from its geometric center and an annular member representing a tire with a varying radial dimension is positioned and retained at a plurality of angular positions on the circle member. An indicator operatively associated with the annular member represents the resulting eccentricity of both members. A similar hand-held device represents that combined eccentricity by conveying vibrations through a handle to the operator's hand.

Abstract: A manikin and control system is provided for use by a student practicing a procedure normally applied to the human body, such as cardiopulmonary resuscitation. The system includes a manikin that has an artificial lung into which the student can blow to expand the lung, and a resilient chest which the student can compress. Sensors are provided in the manikin to accurately detect the instantaneous amount of lung expansion and chest compression. An A/D converter converts the sensor signals to digital signals and inputs them to a compact controller based on an inexpensive microcomputer chip which also stores the control program in ROM. Pushbuttons on the controller's front panel enable the student to select any one of a variety of teaching routines prestored in the microcomputer's ROM. The microcomputer then uses lamps on the panel and a speech synthesizer having prerecorded human speech stored in external ROM chips to issue instructions and advice to the student.

Abstract: Apparatus for demonstrating the use of a computer terminal comprises a projection module supported on a standard overhead projector. The projection module includes a frame which is adapted to rest on an illumination window of the overhead projector. A transmissive liquid crystal display is mounted in the frame parallel to the illumination window such that an image on said liquid crystal display is projected by the projector. A transparent touch screen is also mounted in the frame overlaying the liquid crystal display. By means of a stylus, a user touches the touch screen and thereby designates desired text and/or images for subsequent display. Coupled to the decoder is a computer which retrieves the desired text and/or images which are then transmitted to a display driver. The aforesaid apparatus is most suited to demonstrate a computer terminal which has a touch screen for selecting text and/or images for display.

Abstract: A hand-held calculator for use in conducting classroom demonstrations of the operation thereof, including use of the operation instruction key means. The calculator comprises a frame, a keyboard section, data processing means and a display section and where both the keyboard and display sections are transparent to permit images thereof to be projected on a screen for teaching purposes.

Abstract: A kit for visual demonstration of principles relating to carpets and carpet care. The kit includes a horizontal base member, vertical members removably securable in erect position with respect to the base member at their proximal ends, and means on the base member to hold the vertical members in carrying position when not in their erect positions. A highly preferred base member is a transparent rigid box with spaced upper and lower walls, the vertical members being attacked to the lower wall and extending loosely through openings in the upper wall.The method includes applying dirt onto a shaft near its distal end and, when the shaft is erect on the lower wall of the preferred base member, executing a cleaning step. The cleaning step may involve applying a free liquid, which carries dirt through the opening into the rigid box, or rubbing with a damp wiper and then removing the dirty wiper from a position on top of the rigid box.

Abstract: The cognometer is a portable electronic device programmed for repeated, rapid, automated assessment and monitoring of memory and concentration. The memory monitor randomly generates data and displays the same in a common format, tests the user's comprehension of such data, tests the immediate recall of such data, and tests the delayed recall of such data. The concentration monitor randomly generates a long multi-digit number and displays the same, tests the user's comprehension of such number, and tests the concentration of the user by requiring the user to enter such number while the number is displayed, but without any position cue.

Abstract: An optically linked calculator system for displaying data generated by a local calculator at both the local calculator and at a detached display. The calculator system includes a plurality of transmitting calculators and receiving units. The receiving units include remote display receiving units and receiving calculators. Transmitting calculators transmit entered data and calculated results. Receiving units receive and display transmitted data entries and calculated results. A calculator includes a keyboard, keyboard logic, processing logic, display, display logic, transmit logic, infrared transmitter, switching means, infrared receiver receiver logic and converting logic. The switching means selectively enables components of the calculator for effecting a transmit mode, receive mode, and calculate mode. The remote receiver display unit includes an infrared receiver, data detection logic, processing logic, and a display.

Abstract: A display device for upholstery material and the like including a central section and an arched surface of an upwardly inclined inner surface and downwardly inclined outer surface joined by a curved section on each side of the central section. A channel is formed at the intersection of the arched surface and the central section and channels are formed across the length and width of the central section. The material is draped over the central section and the arched surface and depressed into one or more of the channels to hold the material and to correspond to the various parts of an article on which the material is to be used.

Abstract: A carrying case for a display board that carries information and product samples. The case includes at least one pair of opposed, interior-facing slots for receiving a display board, and an open aperture to expose one face of the display board. Typically, the display board includes electrical components which may be removed from the carrying case and connects to a processor such as a microprocessor or a computer, for operating the electrical components in an integrated manner for display.

Abstract: A portable device for modeling of vehicle graphics having two flat opposite side panels each forming a side profile of the vehicle, at least two flat cross panels extending between the side panels and including front and back panels forming front and back profiles of the vehicle, respectively, hinged interconnections of the cross panels to the side panels such that the structure is erectable to a three-dimensional vehicle model and collapsible to a flat stack, and provision for replaceable attachment of graphics-bearing sheets on the panels. Preferred embodiments include a foldable enclosure dimensioned when folded to receive the collapsed flat stack and when unfolded to serve as a display mount.

Abstract: A holder for display cards comprising an upstanding back panel, a forwardly directed base flange integral with said panel, and a handle depending from said base flange. The upper surface of such base flange is provided a D-ring assembly which is or can be standard for class notebooks. Such assembly is preferably riveted to and against the upper surface of the base flange. The D-ring assembly is spaced from the forward surface of the upstanding back panel so as to accommodate a rearward leaning of upstanding cards retained by the D-ring assembly; the forward edges of the D-ring assembly and base flange are aligned, or proximately so, so that cards supported by the D-ring assembly and extending downwardly are in approximate vertical disposition. The spacing between the D-ring assembly and the back panel can be employed for a variety of purposes.

Abstract: A test device for electronic pressure gauges used by underwater divers is described. The device, comprised of a pressure transmitter which is capable of being connected to the electronic pressure gauge's sensor, is used to simulate the pressure encountered during underwater diving outside of the underwater environment.

Abstract: A picture book comprising the front and back covers and further a plurality of printed paper sheets therebetween, characterized in that said front cover and paper sheets have each window cut in aligned positions, and in that a telephone structure is attached on the inside surface of said back cover so that the dial is always appearing in said windows.

Abstract: A device for teaching the art of blow form molding of plastics is disclosed. The teaching device is portable and sealable, having a housing with a lid. Pressurized gas enters the housing and is directed through an orifice in a housing shelf upward into the lid. Starter plastic is placed on the shelf. A mold is held in the lid and the plastic assumes the shape of the mold as it is blown upward through the orifice into the lid. The lid has a central opening to allow the students to see the process of blow forming of plastics as it occurs. The device has a carrying handle, flanges to fasten it to a work surface, and locking toggle handles to assure a tight seal of lid and housing.

Abstract: A simulator device for demonstrating the advantages of wearing a vehicle safety harness comprises a track and a seat connected to and moveable along the track. A dummy object comprising an egg is used to simulate a person seated in a vehicle. A safety harness is mounted to the seat and, in a first mode of operation of the device, harnesses the dummy object in the seat. A means is provided for propelling the seat forwardly along the track while a stop means limits the forward movement of the seat along the track. An impact shield is mounted at one end of the track for impacting the egg thereagainst in a second mode of operation. In the first mode of operation, the egg is harnessed on the seat to simulate the restraining effect of a safety harness on a person harnessed in a seat during a vehicle crash. In the second mode of operation, the egg is left unharnessed in the seat to simulate the impact effect on an unharnessed person involved in a vehicle crash.

Abstract: A device for rapidly demonstrating the darkening action of phototropic objects, particularly eyeglasses. The device has a housing or casing provided in its lower part (6) with a hollow space (7) which is placed over the objects to be demonstrated (8, 9) while such objects lie on any suitable horizontal supporting surface such as a table or desk. These objects are uniformly illuminated by a flash tube emitting light in the UV-A range and in the visible range. Upon each actuation of the circuit controlling the flash tube a plurality of flashes which succeed each other at a predetermined time interval is automatically given off.

Abstract: Apparatus for learning information which is classifiable into a plurality of levels of detail comprising a first plurality of information bearing elements each bearing a first code indicium and containing information classified at a first level of detail, a second plurality of information bearing elements, each bearing a second code indicium and containing information classified at a second level of detail, and a third plurality of information bearing elements, each bearing a third code indicium and containing information classified at a third level of detail. Additional pluralities of information bearing elements each bearing a characteristic code indicium and containing information classified at a given level of detail may be provided.