| 97-XX |
|
|
Mathematics education |
|
97Uxx |
|
Educational material and media, educational technology |
|
|
97U10 |
Comprehensive works |
|
|
97U20 |
Textbooks. Textbook research |
|
|
97U30 |
Teachers' manuals and planning aids |
|
|
97U40 |
Problem books. Competitions. Examinations |
|
|
97U50 |
Computer assisted instruction; e-learning |
|
|
97U60 |
Manipulative materials |
|
|
97U70 |
Technological tools, calculators |
|
|
97U80 |
Audiovisual media |
|
|
97U99 |
None of the above, but in this section |
