Staff key: a-later

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 fifteen original members have one place, with complete once-only coverage.

Next teaching for this question: On a new nine-object set, separate waiting from two counted places and audit every member.

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: Six plus nine accounts for fifteen; the remaining part is nine.

Next teaching for this question: Separate four from a new thirteen-object set and count/recombine the nine remaining.

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: A distinct valid partition of fifteen, such as ten/five or seven/eight; zero/fifteen is valid if each part is honestly described.

Next teaching for this question: On a new sixteen-object set, change a boundary and check both parts rather than repeat a memorised record.

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: The two accounts cover the same original fifteen once, shown by recombination/member matching.

Next teaching for this question: Make two accounts of the same eleven pieces and remove the old boundary before the new one.

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.