CyberCourse (aka) is open source software for creating skills courses, like programming, statistics, and writing.
- Make flipped, blended courses with lots of exercises.
- Formative feedback at scale, with clickable rubrics.
- Students learn how to do tasks independently.
Designed for universities, but would work for some K12 (maybe? what do you think?).
It's at https://cybercour.se. Comments and suggestions welcome.