Revisit Agile Methodologies presented in PD Day 1 - Honeycomb session. Start the day with a retrospective on the past 4 weeks PD skills development only.
Use Metro Retro to do a collaborative retro session with the whole group.
What did you really enjoy about the past 4 weeks? In particular, what went better than expected? Emphasize the positive!!!
What new things did the team learn during the past 4 weeks? These can be technical things (like how to make a pull request ) or nontechnical things (like how to organise effective study groups).
What things could you, the team, and the volunteers have done better during the past 4 weeks?
What things did you wish you had during the past 4 weeks that were not available? Again, these can be technical or nontechnical (like the desire for more face time with the team).
Your retro should run between 30-60 mins depending on the size of your group.