Target/codes: independently sort, quantify and compare a new fictional observation-card set, with a card-only claim; AC9MFST01, AC9MFN03. Prepare: unseen Check A and teacher-held preparation card. Do not rehearse this set in warm-up.
- Welcome · 3 min. Explain that this new question will help plan the next lesson, not rank the child. Say both category labels neutrally.
- Access · 4 min. Give large/raised cards or an adult mover and neutral reading. Teacher privately verifies the exact set; do not reveal counts or point to answer groups.
- First sort · 5 min. Child places or directs each card under ROUND or NARROW. Save the first child-controlled placement before any correction.
- Independent response · 7 min. Child counts/matches each group, states which outline is shown more on these cards and chooses among Day 165 A/B/C-equivalent response routes in Check A. Do not show after-check practice yet.
- Boundary · 4 min. Ask whether this card set tells us how many nearby real plants have each outline. Capture “only our cards” or equivalent reasoning. Consult the public key only after the first response.
- Close · 2 min. Give one specific next move; later offer Day 165 after-check learner practice or a different worked swap.