Divide a fraction by a fraction

Target: Divide a fraction by a fraction.

Language target: Name which fraction was inverted.

Likely miss: Students multiply straight across or invert the wrong fraction.

Ask: Which fraction did you flip, and why that one?

If you see it: Ask whether the answer should be larger or smaller than the dividend before computing. Then match the reciprocal to that prediction.

Evidence to listen for: The student predicts the size, computes with the reciprocal, and explains a wrong product.

Next: If the reciprocal is unsteady, return to a strip diagram of a unit fraction.

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.