| 75175472 | GIGAMATH PLAYGROUND | Decision Development Corporation | 2160956 |
| 75175448 | JUNIOR GIGAMATH PLAYGROUND | Decision Development Corporation | 2160955 |
| 74133296 | TIME WINDOW | Decision Development Corporation | 1794121 |
| 76290814 | STUDYSERVER | Decision Development Corporation, | — |
| 76007866 | Serial No. 76007866 | Decision Development Corporation | 2473293 |
| 75933296 | ED FROM THE WEB | Decision Development Corporation | 2529151 |
| 75827240 | MAZELAND | Decision Development Corporation | — |
| 75745837 | PUZZLELAND | Decision Development Corporation | 2416579 |
| 75279099 | ENGLISH LEARNING 2000+ | Decision Development Corporation | — |
| 75278957 | CONNECTIONS, CHALLENGES, AND CHOICES | Decision Development Corporation | 2165630 |
| 75274237 | LANGUAGE ARTS 2000+ | Decision Development Corporation | — |
| 75274236 | ENGLISH LANGUAGE 2000+ | Decision Development Corporation | — |
| 75274235 | FOREIGN LANGUAGE 2000+ | Decision Development Corporation | — |
| 75198315 | MATH PLAYGROUND | Decision Development Corporation | 2304489 |
| 75175473 | GIGAMATH | Decision Development Corporation | 2272607 |
| 75165658 | READING 2000 | Decision Development Corporation | — |
| 75165657 | READING 2000 | Decision Development Corporation | — |
| 75158680 | MATH 2000 | Decision Development Corporation | 2177376 |
| 75135469 | MEGAMATH | Decision Development Corporation | — |
| 75135299 | MEGAMATH PLAYGROUND | Decision Development Corporation | — |
| 75135297 | JUNIOR MEGAMATH PLAYGROUND | Decision Development Corporation | — |
| 75135296 | SUPERULTRAMEGAGIGAMATH | Decision Development Corporation | — |
| 75006728 | Serial No. 75006728 | Decision Development Corporation | 2145035 |
| 74700119 | SOLID SOFTWARE | Decision Development Corporation | — |
| 74696373 | TOMBQUEST | Decision Development Corporation | 2269308 |
| 74696372 | CONNECTIONS, CHALLENGES AND CHOICES | Decision Development Corporation | 2149624 |
| 74696371 | SOCIAL SCIENCE 2000 | Decision Development Corporation | 2139389 |
| 74695749 | TOOLS OF THE TRADE | Decision Development Corporation | — |
| 74695543 | 21ST CENTURY MATH | Decision Development Corporation | — |
| 74695451 | 21ST CENTURY SOCIAL SCIENCE | Decision Development Corporation | — |
| 74629542 | SOCIAL STUDIES 2000 | Decision Development Corporation | — |
| 74620009 | KNOWLEDGEBASE | Decision Development Corporation | — |
| 74613783 | INFORMATIONBASE | Decision Development Corporation | — |
| 74602450 | CREATING THE TECHNOLOGY CLASSROOM | Decision Development Corporation | 1980593 |
| 74588067 | JUST IN TIME TEACHING | Decision Development Corporation | 1987638 |
| 74585960 | TIMEBEAM | Decision Development Corporation | — |
| 74585701 | U.S. 2000 | Decision Development Corporation | — |
| 74516044 | CREATING THE ACTIVE CLASSROOM | Decision Development Corporation | 1988954 |
| 74455561 | CURRICULUM 2000 | Decision Development Corporation | — |
| 74454832 | CURRICULUM 2000 | Decision Development Corporation | — |
| 74451228 | MATH 2000 | Decision Development Corporation | — |
| 74450983 | MATH 2000 | Decision Development Corporation | 2178721 |
| 74426786 | 21ST CENTURY MATH | Decision Development Corporation | — |
| 74426780 | 21ST CENTURY SOCIAL SCIENCE | Decision Development Corporation | — |
| 74426778 | 21ST CENTURY MATH | Decision Development Corporation | — |
| 74426777 | 21ST CENTURY SCIENCE | Decision Development Corporation | — |
| 74426764 | 21ST CENTURY SOCIAL SCIENCE | Decision Development Corporation | — |
| 74425813 | CONNECTIONS, CHALLENGES, AND CHOICES | Decision Development Corporation | — |
| 74425769 | TOMBQUEST | Decision Development Corporation | — |
| 74425768 | TOMBQUEST | Decision Development Corporation | — |