Second day on the same lesson — p.22, 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.
Mouth relaxed and half open. Do nothing with your lips at all — no smile, no rounding. Tongue flat in the middle — /u/, as in 'cup'.
They check it: This is the LAZIEST sound in English. If your face is doing anything, you are trying too hard.
Not in Arabic, 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.