# One over matters


## Access

Read or sign the exact source and prompts neutrally, enlarge them, or scribe the learner’s chosen words. A figure, operation, regrouping, equation role or check supplied by an adult is mathematical help and is recorded as such. Show, draw, type, sign or use usual communication. One component can be enough; pause/pass/finish are choices. Four own spaces are genuinely empty. Models, criteria and next lessons stay on separate staff pages.

## Complete different guided source

A pretend AUD budget $350 costs $176 and $175.

## Complete new source

A fictional AUD budget $200 costs $97 and $104.

## Complete own invitation

An invented AUD budget $500 costs $248 and $251.

## Entry and teach

Check why exact comparison is necessary near threshold.

## Guided instruction

351 cost, 1 over. Invite each relationship before the answer; teach missing facts and name help.

## Id

NEXT23

## Materials

Broad paper/empty bar or line/place-value headings as useful; usual communication; no actual stock/handling/purchase.

## Observe and follow up

Receive one available own relationship before staff possibility. If it matches criterion, offer another small new context later; this is not automatic mastery. If not, return to the entry relationship and fade one hint. Record the actual mathematical help. If access/time is not available, change access or sitting rather than marking wrong.

## Relationship to check

Teach the observed missing relationship in a new ordinary domain; not an answer repetition or further held item.

## Session sequence


1. Read the new source and name units/wanted quantity. Check why exact comparison is necessary near threshold.

2. Model on separate adult paper. 201 cost, 1 over; an estimate 100+100≈200 cannot prove the plan fits.

3. Guide a different complete source. A pretend AUD budget $350 costs $176 and $175. 351 cost, 1 over.

4. Receive one own attempt. An invented AUD budget $500 costs $248 and $251. Staff reference only: 499 cost, 1 left.

5. Compare available work with: Exact cost and money-left/excess direction support affordability in the model. Choose one follow-up offer; never infer independence from a copied model.

## What to look for

Exact cost and money-left/excess direction support affordability in the model.

## Staff own possibility

499 cost, 1 left.

## Teacher model

201 cost, 1 over; an estimate 100+100≈200 cannot prove the plan fits.

## Timing

An adjustable 10–20 minute ordinary lesson, unpiloted; split/stop after one useful part.

## Title

One over matters