# A decision with units


## 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

An invented art plan needs 450 labels; 236+198 available.

## Complete new source

A fictional theatre plan needs 300 tickets; 148+167 available.

## Complete own invitation

A pretend library game needs 600 cards; 287+328 available.

## Entry and teach

Name availability versus need; surplus is not shortfall.

## Guided instruction

434 available, 16 short; need 16 more. Invite each relationship before the answer; teach missing facts and name help.

## Id

NEXT19

## 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. Name availability versus need; surplus is not shortfall.

2. Model on separate adult paper. 315 available, 15 extra; the stated need is met.

3. Guide a different complete source. An invented art plan needs 450 labels; 236+198 available. 434 available, 16 short; need 16 more.

4. Receive one own attempt. A pretend library game needs 600 cards; 287+328 available. Staff reference only: 615 available, 15 extra; need is met.

5. Compare available work with: Decision direction and gap unit agree with the original model. Choose one follow-up offer; never infer independence from a copied model.

## What to look for

Decision direction and gap unit agree with the original model.

## Staff own possibility

615 available, 15 extra; need is met.

## Teacher model

315 available, 15 extra; the stated need is met.

## Timing

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

## Title

A decision with units