|
Match
|
Document |
Document Title |
|
|
6938897 |
Universal role playing game elevation indicator system
A universal role playing game elevation indicator system for efficiently indicating elevation measurements of playing pieces used in role playing games. The universal role playing game elevation...
|
|
|
6884077 |
Apparatus for math calculation and instruction
An apparatus and method for teaching mathematics to children is disclosed. In one embodiment, the apparatus comprises a flat, ruler-like rod having expressed on one face a vertically arranged...
|
|
|
6712614 |
Abacus calculator
An electronic abacus calculator comprising an electronic abacus display screen in combination with a numeric display and an electronic keyboard calculator. The invention also comprises a personal...
|
|
|
6079983 |
Educational instrument for numbers
An educational instrument for numbers for providing students with an educational tool that would be fun and challenging. The educational instrument for numbers includes a base member having a top...
|
|
|
5425643 |
Mechanical, analog type, teaching aid computer
A teaching aid computer, requiring no electrical or spring power, designed for elementary and middle school students, that when properly set and manipulated, provides real number solutions to...
|
|
|
4959017 |
Electronic learning device for teaching how to handle money
An electronic learning device (10) for teaching how to handle money is provided. A student provides input to the device, in a preferred embodiment, by a plurality of keys (40) which select the...
|
|
|
4836786 |
Demonstration calculator
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...
|
|
|
4753439 |
Message type recording psychographs
A psychograph, of a type employing a movable indicator to designate indicia on a principal part of the device such as a board, can be constructed so that the indicator will cause a switch to close...
|
|
|
4725237 |
Children's educational apparatus
A children's educational apparatus comprising a driving member and a control member. The driving member includes a driving roll and two driven rolls, all which rotate together. A set of cards is...
|
|
|
4674433 |
Correct answer displaying device for arithmetic practicing unit
A correct answer displaying device for an arithmetic practicing device or the like. Plural chambers are arranged in matrix form with partition boards, and a colored transparent plate is placed over...
|
|
|
4611996 |
Teaching machine
A teaching machine comprising circuitry to select and a display to present problems to a student, switches to receive said student's response, circuitry to determine if the answer is correct and,...
|
|
|
4447213 |
Electronic learning aid
An electronic learning aid of the type having a keyboard, a display at which problems are posed, a circuit for posing problems at the display, and a circuit for comparing proposed answers entered...
|
|
|
4358273 |
Electronic self-study device
An electronic self-study device in which problems are randomly generated comprises input keys by means of which a user inputs an answer to a displayed problem, and a review key which is depressed...
|
|
|
4258477 |
Multiplication study device
A multiplication study device for teaching a student multiplication skills by operation of push-buttons mounted in a box-shaped case. The push-buttons are each provided with a semi-transparent...
|
|
|
4164078 |
Electronic quiz apparatus
An electronically operable multiple-choice response evaluating apparatus comprises a housing having a plurality of first input switches which are manually actuable to introduce a code of indicia...
|
|
|
4126949 |
Educational calculator
An educational calculator including a keyboard, a programmable logic array calculator circuit, an accumulator, a comparator, and two LED's for indicating whether the supposed answer is correct is...
|
|
|
4085523 |
Teaching machine
A teaching machine utilizes a card having recorded on it visually readable statements of problems and corresponding machine readable answers. The teaching machine displays the answers to the...
|
|
|
4075771 |
Toy simulating a calculator
A toy simulating a calculator having a visual display read-out by providing a housing having a display window with a continuous loop of strip material viewable therein, the strip having a plurality...
|
|
|
3977092 |
Teaching machine card
A teaching machine utilizes a card having recorded on it visually readable statements of problems and corresponding machine readable answers. The teaching machine displays the answers to the...
|
|
|
3925909 |
Teaching machine
A teaching machine utilizes a card having recorded on it visually readable statements of problems and corresponding machine readable answers. The teaching machine displays the answers to the...
|
|
|
3844053 |
ARITHMETIC EDUCATIONAL TOY
An arithmetic educational toy intended to teach a pre-school aged child the process of addition and the meaning of numerical sequence and magnitude, comprising: a housing; a plurality of display...
|
|
|
3803834 |
WRISTWATCH CALCULATOR
Disclosed is a combination wristwatch and wrist calculator. The wristwatch comprises an eight digit electro-optical display indicating time and calendar information when in the time display mode...
|
|
|
3703040 |
KEYBOARD TEACHING AID
A group of hand actuated keys are pivotally mounted on a rod supported by a frame. Means are provided to prevent adjacent keys from interracting with each other while allowing a key to be placed at...
|
|
|
3694932 |
MATHEMATICS TEACHING MACHINE FOR PRIMARY GRADES
A teaching device for teaching mathematics in the primary grades including a board having a plurality of openings extending between opposite sides with a movable plug in each of the openings. Each...
|
|
|
3678614 |
TOY COMPUTER CAPABLE OF LIMITED COMPUTATION AND SIMULATING LARGE COMPUTER
A toy computer is presented which contains a keyboard providing for input and operation with two numbers or characters, simulates the internal computation like a real computer by a series of...
|
|
|
3624687 |
APPARATUS FOR TEACHING ADDITION OF PAIRS OF ONE-DIGIT NUMBERS
Apparatus comprising an educational toy for instructing beginning students in addition of pairs of one-digit numbers. Preselected pairs of numbers are displayed, each on a different rotating...
|
|
|
3386189 |
Educational device
|
|
|
2987827 |
Visual aid mathematics educational device
|
|
|
2842871 |
Educational device for use in teaching arithmetic
|