# Day 33 · A position needs a steady reference

“Keep the frame steady. Move the marker or tell someone where it goes. Which notes can we compare?”

## Your notes

Fictional frame F uses a tree-outline mark on its left and a low wall-outline across its base. At model time A an invented star triangle is above the left mark; at time B the same intact triangle is above the centre. F stays fixed. Record C uses a moved/different frame G and only says “above left”; no mapping between F/G is given. Compare A/B against F; C's word “left” does not by itself establish the same sky position. Star separations/real distances were not measured.

## Pick one way

**Route1 — Direct a paper observatory:** Child gives the sequence for frame/triangle placement, then names what changed. This is actual paper modelling, not night observing. **Route2 — Compare notebooks:** Circle the named references in A/B/C; keep usable data and ask for the missing F/G relation before comparing C. **Route3 — Make tactile or spoken instructions:** Use broad raised paper edges if locally suitable or verbal frame labels; child supplies a fixed-reference instruction to a willing helper. No tactile-contact requirement.

You can ask a grown-up to read or write exactly what you tell them. Do a small useful part, rest or pass. A made-up note is not a real sky sighting.

[Picture-free paper labels](../paper/SKY-DESK.html) · [Optional desk](../interactive/index.html)

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<summary>Grown-up help</summary>

[Full teacher start](../teacher/day-33.html) · [Home offer](../home/H03.html). Keep the first idea before giving an example.

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