licjon cd62dc334d
Changed link to Effective Thinking Through Mathematics course in extras (issue #870) (#871)
* Changed link to Effective Thinking Through Mathematics course in extras

* Delete .DS_Store

Co-authored-by: Jonathan Hustad <jonathanhustad@Jonathans-iMac.lan>
Co-authored-by: waciumawanjohi <waciumawanjohi@users.noreply.github.com>
2021-03-03 13:38:06 -06:00
..
2020-12-20 10:50:34 -06:00