Integers and opposites

Target: Find the opposite of an integer.

Language target: Explain an opposite as a sum of zero.

Likely miss: Students think the opposite of a negative is still negative.

Ask: What sum shows that these are opposites?

If you see it: Ask what number brings the value back to zero.

Evidence to listen for: The student names a sum of zero.

Next: Use a number line jump if the sign stays.

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.