Challenge postponement

The Challenge Master has granted a raincheck for the week as finals continue to bulldoze my life into scattered bits of broken scheduling.  For the record, what would have been Challenge 4 has been received, but unfulfilled:

Teach one person one skill
- Skill can be physical or otherwise
- Person must have full mastery of the skill
- Difficulty level: 2/5

Will this challenge be reused?  It remains to be seen as the decision rests with the CM.

Until then..