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 open about half as wide as for short a. Lips still spread. Tongue in the middle — /e/, as in 'bed'.
They check it: Say 'bad' then 'bed' with a hand under your chin. Feel the jaw come UP.
Not in Arabic. For those children this is a new physical skill, not a reminder. Do not let the column start until the mouth can make it.