Mean

Target: Compute a mean as an equal share of the total.

Language target: Say “equal share.”

Likely miss: Students report the middle value when asked for the mean.

Ask: What is the total, and how many values share it?

If you see it: The mean balances the total, so add and divide by how many.

Evidence to listen for: The student divides the sum by the number of values.

Next: If the median appears, ask what the total would need to be.

Homework mark for this device

Until a teacher sets it here, family practice is optional. Stars are an incentive, not a grade. This setting is local. It is not a district roster.

unset optional required incentive

Observable student moves: names both quantities, uses the represented relationship, and revises after feedback. This companion is not a score.