| Date | Name | Who | What |
|---|---|---|---|
| 2017-11-30 15:59:32 | Canvas item selections | dbohdan | reference |
| 2018-12-04 22:45:03 | Canvas rectangle marking | admin | reference |
| 2021-12-18 16:16:58 | Sumerian Counting Boards, multiplication operation placement strategy, and eTCL demo example, numerical analysis | gold222 | reference |