# Day 20 — Make a tiny change exhibit

**Purpose/codes:** Present an explanation using sources, then revise for a reason; K01/S02/S03/S04/S05/S06/S07 as encountered, never full attainment. **Prepare:** child's actual prior notes and blank exhibit sheet, optional Change Bench/paper contract. **Child start:** “Tell a small story of change. Show where your clues came from.”

1. **Invite:** Offer a three-part mini display: question/change; dated/source-backed explanation; one uncertainty or next question. A child can use a supplied ordinary invention or an adult-checked real source. Mark which it is.
2. **Model:** On unrelated O20 INVENTED cinema note: tickets changed from desk-only in 2008 to desk-plus-machine in 2016 because the organiser wanted another buying option; note gives no waiting-time result. Demonstrate one bounded sentence and an open effect question. Do not use a held assessment case.
3. **Guide:** Each child chooses relevant notes, verifies source labels and event/publication dates, names supported cause/person contribution if available, and withholds anything not supplied. The exhibit may be spoken/signed/AAC, dictated labelled drawing or small tactile/card arrangement.
4. **Choose:** Use one presentation mechanism; private source comparison or a willing reader both work. Keep first/revised words and actual feedback/self-check separate. Optional later fresh case samples taught components without using the finished ordinary exhibit as its answer.
5. **Check:** Ask “Which sentence comes from your source? What did you keep or change, and why?” Capture the child's explanation and revision reason, not a polished group product attributed to every child.
6. **Next:** Source confusion→new note/claim matching; date confusion→event/publication labels; unclear cause→explicit reason/action/effect; viewpoint confusion→new attributed voices. A sound source explanation can lead to a wider authorised local inquiry, not automatic year completion.

**Routes:** (a) **Pocket museum:** assemble a fold-out dated display with a removable source/unknown card. (b) **Private curator:** give a spoken/signed/AAC tour of cards to a willing listener or read it back privately, changing one misleading claim. (c) **Version compare:** type/dictate two versions in the temporary local Change Bench or on paper; compare words and explain one source-driven change without an automated grade.

**Observation:** The child's actual source-supported explanation and reason for keep/change. A fictional display is fictional reasoning; a genuine local historical source gives source-based local evidence, not child field observation or the voices of a whole community.

[Short child start](../child/day-20.html) · [Ordinary note](../ordinary/O20.html) · [Home start](../home/H20.html) · [Extra project](../projects/X20.html).

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