These are finite task opportunities, not proof of mastery. Record what was attempted and what support was used.

• This lesson covers positive whole numbers with halfway-up rounding. It does not cover signed numbers or decimals.

• Error limits are conservative. No attained exact maximum is claimed for subtraction.

• The supplied inverse rules and operands support reconstruction. Responses do not establish uncued scalar recall or arithmetic fluency.

• Try applies rehearsed methods to changed inputs. It does not establish independent discovery or mastery.

• A reported value also supplies the estimate scalar in C. That scalar alone is not evidence of independent estimation.

• Rounded input responses and the estimate equation provide more information, but chronology still requires observation.

• Oral responses, read-aloud support, and transcription do not establish independent reading or writing.

• Equivalent valid methods and justified uncertainty before exact checking remain acceptable.

Record actual responses and help. Instructions do not establish observed chronology or mastery.