Matches 1 - 31 out of 31

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8317522 Hormonal quotient profile calculator  
A hand held device (10) for measuring automatically the Hormonal Quotient and correlated hormonal status of an individual, providing a measure of index finger for ring finger. The device (10)...
8267691 Threat fire simulation and training system  
A firearm training simulation system for simulating the impact of one or more projectiles impacting a user includes an electrical impulse element configured for physical contact with the user. A...
6716033 System for teaching mathematics  
A system uses objects that can be combined to learn mathematical operations. Operand objects illustrate a numerical operand and an associated set of possible numerical solutions to operations...
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...
5820382 Multifilication quizzer  
A multiplication quizzer that allows a user to learn the multiplication tables. The quizzer includes a base member, at least one first obliquely-forwardly-downwardly-oriented multiplication table...
5518409 Sliding digital bookmarker  
A bookmarker comprises a thin, planar base member. A thin, planar upper member has the shape of the base member with the perimeter edges of the upper member being permanently adhered to...
5407356 Pictorial image transforming manipulative-with multiple channel tracks  
A visual aid teaching device for translating one or more superimposed picture images in a linear path at different positions with respect to a stationary underlay picture includes as basic...
5277587 Learning toy  
A learning device including a holder having a storage area and a display area. Information cards including a problem and a coded solution are selectively introduced into the display area wherein...
4915634 Visual and manipulative teaching aid for mathematics  
A teaching aid includes a plurality of lenses arranged in an array and mounted within a frame member. A slide channel is disposed along the edges of the frame and is imprinted along one edge with...
4856998 Teaching aids  
An improved teaching aid including a plurality of parts, each of the parts having arithmetic indicia printed thereon, the parts being operatively coupled and relatively moveable with respect to...
4372742 Arithmetical teaching aid  
An arithmetical teaching aid includes a display board B comprising a rectangular array of display areas A arranged in rows R and columns C. Adjacent display areas A are marked (1, 10, 100 etc.) to...
4241522 Teaching aid  
A teaching aid procreated to develop learner participation in mental computation of number combinations involving all of the elements of basic arithmetic. Four elongated slide members are...
4185401 Arithmetic game board  
An educational game board for teaching arithmetic. The game board has a group of holes in a grid arrangement with a first group of slides beneath and parallel to the holes in one direction, and a...
3874096 EDUCATIONAL FLASH CARD ASSEMBLIES  
Flash card training devices in which a plurality of exhibitors are interengaged to relate indicia thereon in such manner as to form mathematic or other equations have cards with back panels and...
3789517 EDUCATIONAL FLASH CARDS  
Educational teaching aids in the form of flash cards for visual display of problems and solutions in teachings of mathematics have sleeve like pockets connected together at their sides and at one...
3747846 ELEMENTARY CIRCULAR SLIDE RULE  
This invention relates to a circular slide rule which is particularly adapted for facilitating the learning process of addition and/or subtraction by primary grade students. The slide rule...
3735504 ARITHMETIC TEACHING AID  
An arithmetic teaching aid. A problem board has on its first side a plurality of rows and columns, the intersections of which define locations, and arithmetic designations within those locations...
3696526 EDUCATIONAL TESTING AND INSTRUCTIONAL DEVICE  
A device for use in the instructor-testing and self-instruction of students consisting of a pre-programmed tape carried within a permanently sealed cassette and means manipulatable by the...
3690019 NUMBER SEQUENCE TEACHING AID  
A game-type teaching aid for use in a day school, kindergarten classroom, or similar place for child instruction and learning. It comprises a colorful chart which has psychological appeal and...
3491193 INSTRUCTION DEVICE  
3435541 DIDACTIC DEVICE FOR TEACHING MATHEMATICS TO CHILDREN  
3432943 MATHEMATICS TEACHING DEVICE  
3402482 Mathematics teaching device  
3377717 Device for teaching addition and subtraction  
3340622 Teaching device  
3147556 Calculating device  
3140552 Device for teaching the concept of fractions  
3136076 Educational tool adapted to facilitate teaching the arithmetic of fractions  
3005268 Number game device  
2966747 Educational device for teaching arithmetic  
2914865 Arithmetic teaching aid to demonstrate fractions  
Matches 1 - 31 out of 31