| Patents for G09B 3 - Manually- or mechanically-operated teaching appliances working with questions and answers (1,613) |
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| 07/07/1998 | US5775918 System for making examination papers and having an automatic marking function |
| 07/01/1998 | CN2285492Y Card type circular memory device |
| 06/10/1998 | CN2283897Y Teaching disk for middle school English tense |
| 06/02/1998 | US5759041 Mathematics teaching device |
| 05/19/1998 | US5752836 Categorized test item reporting method |
| 04/21/1998 | US5741561 Interchangeable educational writing pad |
| 04/07/1998 | US5735694 Method for verifying test answers between two or more test resolvers |
| 04/02/1998 | WO1998013807A1 Automated testing and electronic instructional delivery and student management system |
| 03/31/1998 | US5733128 Language learning aid and method |
| 03/25/1998 | EP0830256A2 Temporary marking, ultraviolet radiation detection, and printing, all using photoerasable colorants |
| 03/01/1998 | CA2184416A1 Make-u-study-game |
| 02/26/1998 | WO1998008209A1 Didactic learning device, preferably for use in primary schools |
| 02/19/1998 | DE19633198A1 Didaktischer Lernhilfsapparat, vorzugsweise zur Anwendung in der Grundschule Didactic learning auxiliary apparatus, preferably for use in the primary school |
| 02/17/1998 | US5718591 Method for providing performance feedback to test resolvers |
| 02/10/1998 | US5716213 Method for preventing bias in test answer scoring |
| 02/03/1998 | US5713739 Learning aid for use in language education |
| 02/03/1998 | CA2108333C Coin learning method and apparatus |
| 01/20/1998 | US5709551 Multiple test item scoring method |
| 11/25/1997 | US5690497 Dynamic on-line scoring method |
| 10/30/1997 | DE19711433A1 Teaching aid for individual control of order of tasks and solutions |
| 10/22/1997 | CN2265564Y Learning appliance for children mathematics study |
| 08/19/1997 | US5658161 For assessing a student?s knowledge of a subject |
| 07/31/1997 | WO1997027572A1 Remote learning system |
| 07/31/1997 | CA2244427A1 Remote learning system |
| 07/17/1997 | WO1996039302A3 Temporary marking, ultraviolet radiation detection, and printing, all using photoerasable colorants |
| 06/17/1997 | US5639240 Interactive book assembly |
| 06/03/1997 | US5634799 Educational apparatus |
| 05/06/1997 | CA2094823C Method of formating and memorizing information |
| 04/30/1997 | DE19539415A1 Mechanical data-support with flat body |
| 04/08/1997 | US5618180 Method of teaching using a computer |
| 03/04/1997 | US5607186 Survey apparatus |
| 02/05/1997 | EP0616548B1 Playing cards for an educational game |
| 01/28/1997 | US5597311 System for making examination papers and having an automatic marking function |
| 12/27/1996 | EP0479990B1 Game for learning multiplication tables |
| 12/25/1996 | CN2243690Y Mathematic exercise card |
| 12/12/1996 | WO1996039302A2 Temporary marking, ultraviolet radiation detection, and printing, all using photoerasable colorants |
| 12/12/1996 | CA2219463A1 Temporary marking, ultraviolet radiation detection, and printing, all using photoerasable colorants |
| 11/13/1996 | EP0742540A1 Educational apparatus |
| 09/24/1996 | US5558521 System for preventing bias in test answer scoring |
| 09/24/1996 | US5558520 Interactive book assembly |
| 09/03/1996 | US5551700 Playing cards for an educational game |
| 08/28/1996 | CN2234112Y Question device for abacus calculation |
| 08/13/1996 | US5545042 Learning board in combination with solution lists |
| 07/25/1996 | DE19502031A1 Learning and observation training game |
| 06/19/1996 | CN2229693Y Standardizing device for answering question |
| 06/04/1996 | US5522732 Reversible test booklet and answer sheet |
| 05/29/1996 | CN2228246Y Solid book-shaped toy |
| 05/15/1996 | CA2162817A1 Creative assessment system and program |
| 05/15/1996 | CA2162780A1 Reversible test booklet and answer sheet |
| 05/09/1996 | WO1996013821A1 Display device |
| 05/07/1996 | US5513852 Game of intellectual challenge |
| 04/10/1996 | CN2224093Y Mathematics Excercising board for pupil |
| 04/04/1996 | DE19530657A1 Learning toy |
| 02/20/1996 | US5492473 Language instructional and fact recognition apparatus |
| 12/12/1995 | US5474456 Educational reading kit and method |
| 11/14/1995 | US5466159 Collaborative and quality control scoring system |
| 10/17/1995 | US5458493 Dynamic on-line scoring guide |
| 09/05/1995 | US5447439 Interactive story book using stickers and a method of teaching |
| 08/16/1995 | EP0638195A4 Teaching aid for foreign language. |
| 08/15/1995 | US5441415 Interactive computer aided natural learning method and apparatus |
| 08/01/1995 | US5437554 System for providing performance feedback to test resolvers |
| 06/20/1995 | US5425642 Method of spelling out a word before an audience |
| 06/07/1995 | EP0656139A1 An interactive computer aided natural learning method and apparatus |
| 05/03/1995 | EP0650626A1 Psychometric testing |
| 04/27/1995 | WO1995011502A1 A learning or games product |
| 04/12/1995 | EP0647929A2 Educational toy |
| 04/08/1995 | CA2133791A1 Educational toy |
| 02/15/1995 | EP0638195A1 Teaching aid for foreign language |
| 01/25/1995 | CN2188233Y Interest mathematical calculation performing appliance for pupil |
| 09/28/1994 | EP0616548A1 Playing cards for an educational game. |
| 08/02/1994 | US5334021 Masking apparatus for use in authoring, formatting and presenting information to be learned or memorized |
| 04/28/1994 | WO1994008671A1 Playing cards for an educational game |
| 03/23/1994 | EP0588132A1 Learning toy |
| 03/16/1994 | CA2104627A1 Learning toy |
| 02/23/1994 | CN2157556Y Computer read card answering device |
| 01/27/1994 | DE4224022A1 Test-sheet for examination questions - comprises two duplicating sheets fixed together and with strip detachable from front one covering correct answers |
| 01/25/1994 | US5281146 Educational device and method |
| 01/20/1994 | WO1994001849A1 Psychometric testing |
| 01/20/1994 | CA2140143A1 Psychometric testing |
| 01/11/1994 | US5277587 Learning toy |
| 12/07/1993 | US5267865 Interactive computer aided natural learning method and apparatus |
| 11/11/1993 | WO1993022757A1 Teaching aid for foreign language |
| 11/11/1993 | CA2134437A1 Teaching aid for foreign language |
| 11/02/1993 | US5257939 Cultural knowledge board game |
| 09/15/1993 | CN2142215Y Teaching appliance for answering the question presented by the students capable of self-correcting addition, subtraction operation |
| 08/19/1993 | WO1993016454A1 An interactive computer aided natural learning method and apparatus |
| 08/18/1993 | EP0555316A1 Method of formatting and memorizing information |
| 08/10/1993 | US5234344 Book package |
| 07/07/1993 | CN2137805Y Electronic sliding-type learning device for exercise-choosing |
| 06/08/1993 | US5217231 Power of observation invisible ink game |
| 06/01/1993 | US5215956 A sheet of paper is printed with inks containing dyes which changing from invisible colorless to visible multicolor by applying a color former; discoloration inhibition |
| 05/05/1993 | CN2132233Y Asking question device for digital calculating exercises |
| 04/12/1993 | WO1992008216A1 Method of formatting and memorizing information |
| 04/08/1993 | DE4205937C1 Teaching device for self and immediate checking of answer to questions - has question form with columns for questions and selection of answers and answer and checking fields |
| 03/30/1993 | US5197884 Question and answer game for stimulating interest in news periodicals |
| 03/23/1993 | US5196243 Printed matter |
| 02/02/1993 | US5183399 Device for training of differentiation |
| 12/01/1992 | US5167505 Educational aides and methods |
| 11/10/1992 | US5161978 Method for authoring, formating and presenting information to be learned or memorized |
| 11/10/1992 | US5161977 School subject learning aid and tutor |