Second day on the same lesson — p.34, a column of real words on one pattern. Do not re-teach it. Re-run the column and go at whatever the children were not accurate on yesterday.
Tongue tip between your teeth, same as the first th. Voice ON — this is the th in 'the' and 'that'.
They check it: Hand on your throat. Say 'thin', then 'this'. The second one buzzes.
Not in Somali, Urdu. For those children this is a new physical skill, not a reminder. Do not let the column start until the mouth can make it.