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. 2020 Apr 10;15(4):e0231269. doi: 10.1371/journal.pone.0231269

Table 3. Information about the qualitative measures.

Instrument When? Who? To whom? How long? How many people at a time?
1. Field notes during the intervention researcher-teacher any aspect 1–3 minutes each annotation -
2. OQQ last session researcher-teacher students 15 minutes 12–25
3. Focus groups after the intervention researchers 1 and 2 students 20 minutes 4–5
4. Interviews after the intervention researchers 1 and 2 students and teachers 25 minutes 1