Day 50: Try a new case, choose what is next

Useful outcome

Keep your first idea and choose one next maths invitation. Use existing safe pieces, original marks or the empty own organiser. Full description. The child may keep the product private.

Prepare and check entry

Prepare the ordinary whole 18 and separate counted/waiting space, two or three parts as relevant, large numeral cards and optional verified ten-strips. Audit a ten before using it. Ask for one-to-one coverage and value of a full unit. Teach missing entry knowledge on a new small collection before today's larger example. Smaller actual quantities remain useful and are named.

Run the 25-minute component

  1. Start, 3 minutes: offer the useful outcome. Ask what amount is being organised and how we can include each object once.
  2. Model, 5 minutes: 10 + 8 = 18. Another account is 6 + 12 = 18. These describe one original collection. Verify each part and include each object once. Choose a new ordinary case or a staff fresh case suited to the components taught. Keep the first thinking before feedback. Check objects, parts and whole. Make a useful revision when needed, or keep a supported account. Pick one next invitation.
  3. Try together, 7 minutes: the child selects boundaries/members; an adult may move marks at their direction. Ask “What is in each part? What stayed the same?” Check by the actual members, not only matching printed numerals.
  4. Choose, 7 minutes: take one of Two-job kit, Open-ten plan, Three-job notes. Different purposes/quantities give new work; they are not fixed sensory learner labels.
  5. Show and check, 3 minutes: ask for today's relevant part values, whole and one reason. Keep first thinking/support, then a revision if needed. A model already supplied is not independently invented.
  6. Next invitation: Choose the next teaching by the missing component: coverage, unit value, replacement, changed parts, or justified keep/repair. Use a different small example and then a new case, not the same memorised answer.

Likely confusion and response

A copied answer or prompted exchange is named as support. A smaller successful sample is useful without standing for an unperformed larger task. Choose the next teaching by the missing component: coverage, unit value, replacement, changed parts, or justified keep/repair. Use a different small example and then a new case, not the same memorised answer.

What to notice

Look for correct whole/part membership, matching quantities, the day's particular exchange/transfer/check and a supported reason. A correct whole alone does not prove every component. A child can choose a valid partition different from the model. Record actual quantity, access support and mathematical prompts; do not grade voice, handwriting, speed or motor independence.

Child start · Home · Extra · Worked contexts · Assessment selector.

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.