Target/codes: independently model and reason about two new add/take situations within 10; AC9MFN04, AC9MFN05. Prepare: unseen Check B and teacher-held print card. Do not preview its numbers or show the key.
- Welcome · 3 min. Say that both invented stories are new and show how to plan the next lesson, not a grade.
- Access · 4 min. Give exact start/change words through neutral read-aloud, large print, full-word tactile pieces or AAC. Check broad sets out of view; no operation hint.
- First model · 5 min. Child acts out the first story and chooses how to count or recognise parts. Save the first start/change/end arrangement before feedback.
- Independent response · 7 min. Child models the second story on a reset tray, names how many remain/end and explains why pieces moved in or out. Written numerals are optional if not yet taught; quantity/action evidence is required.
- Reason check · 4 min. Ask which question each answer addresses. Keep adult access move separate from a content prompt. Consult public key only after collection.
- Close · 2 min. Give one specific next move and later offer Day 160 practice with different values.
Use twenty optional worked swaps for new practice after the core, not as a second compulsory lesson. A school may substitute a locally suitable context while preserving the counted set, action and evidence target. These drafts neither certify the national description nor claim observed classroom success.