SubjectNest · Year 3 maths · Make it fit, then check

Staff complete component keys and next teaching

Do not send this whole bank or recipe/aid-data to learners. Accept correct alternative reasoning and usual communication; physical presentation, speed and amount written are not maths components.

l-reserve · Length

Full supplied source: MODEL paper flag starts at 8 cm and ends at 26 cm on a labelled ruler. Strip A is 16 cm; strip B is 22 cm. A job needs at least 20 cm. These are supplied readings, not measured classroom objects.

Q1 · Choose a useful unit and tool for the length of a small paper flag. Explain why.

Worked/acceptable response: cm and a labelled ruler; they measure the distance along the flag rather than mass/capacity.

Component: Attribute/unit/tool reason

Evidence: independently shown / shown with named cue / partial / not observed. A correct supplied result with adult computation is supported result, not independent reasoning.

Specific unrelated next teaching: Choose units for a new familiar empty box question.

Q2 · How long is the flag? Show how the two readings help.

Worked/acceptable response: 26 − 8 = 18 cm; starting reading must be excluded.

Component: Start-to-end distance and unit

Evidence: independently shown / shown with named cue / partial / not observed. A correct supplied result with adult computation is supported result, not independent reasoning.

Specific unrelated next teaching: Compare unrelated diagrams 0→8 and 3→11 cm.

Q3 · Which strip meets the job, and how much spare length does it give?

Worked/acceptable response: B: 22 cm is at least 20 cm, giving 2 cm spare. A is 4 cm short.

Component: Target comparison and contextual difference

Evidence: independently shown / shown with named cue / partial / not observed. A correct supplied result with adult computation is supported result, not independent reasoning.

Specific unrelated next teaching: Compare a new target with two new strip lengths.

Q4 · Explain one way to check the flag reading on a real safe ruler if an adult approves. What cannot the paper answer show?

Worked/acceptable response: Check real zero/start, align the flag, read the end in cm or subtract two endpoints, with requested support. A paper explanation does not prove handling/alignment/physical measuring.

Component: Usable real check and evidence boundary

Evidence: independently shown / shown with named cue / partial / not observed. A correct supplied result with adult computation is supported result, not independent reasoning.

Specific unrelated next teaching: Model a different real safe alignment; record action and helper separately.