Staff key: a-first

Source and own response remain separate. Preserve first thinking and actual support before reading this key into feedback. A correct supplied value is not independent discovery.

Question 1: Coverage

Look for in this source: All twelve source members each have exactly one place; no object is omitted or counted in both parts.

Next teaching for this question: On a new six-object collection, move each once from waiting into one of two places.

Later invitation: choose a new complete case after that teaching. Record changed quantity/arrangement and prior familiarity; do not repeat this exact answer until memorised.

Question 2: Remaining part

Look for in this source: Five plus seven accounts for twelve; second part is seven. A counted/directed model is accepted.

Next teaching for this question: Use a different eight-object collection with three separated; count the five remaining, then recombine.

Later invitation: choose a new complete case after that teaching. Record changed quantity/arrangement and prior familiarity; do not repeat this exact answer until memorised.

Question 3: Alternative

Look for in this source: Any distinct valid two-part account covering twelve once, such as six and six or four and eight; copying five/seven unchanged is not another split.

Next teaching for this question: Move one divider or one object on a new eleven-object set, then name both changed parts.

Later invitation: choose a new complete case after that teaching. Record changed quantity/arrangement and prior familiarity; do not repeat this exact answer until memorised.

Question 4: Same whole

Look for in this source: Recombine or match members to show both accounts represent the original twelve; do not add both pictures as two collections.

Next teaching for this question: Use the same seven pieces, show two accounts and match each original object once.

Later invitation: choose a new complete case after that teaching. Record changed quantity/arrangement and prior familiarity; do not repeat this exact answer until memorised.

Accept different supported valid partitions subject to the particular question constraints. Record each component independently, with actual source/range/support. Maths hints, access supports and adult physical acts stay distinct. No speed, neatness, voice or motor score; no five-point grade inferred from four questions.

Original SubjectNest teaching and drawings © NeuroForgeIO Pty Ltd 2026, CC BY 4.0. Credit SubjectNest by NeuroForgeIO Pty Ltd, version 0.1.0, source and licence; note changes. Curriculum and provider rights remain separate.

Modified from the named State of Queensland (QCAA) Years 1–2 techniques/conditions, October 2023, Year 1 standards elaborations, April 2025 and complexity/familiarity advice,2025. Original mathematical tasks/criteria are ours; adapted conditions and folio guidance retain © QCAA 2023/2025, CC BY 4.0 subject to QCAA copyright, exclusions/third-party notices and no endorsement. No source student work/media/marks/glossary is supplied.