Target/codes: make two equal groups of broad paper pieces and describe each group's location relative to fixed familiar room markers; AC9MFN06, AC9MFSP02. Prepare: P174 four cards, two trays and room mat with DESK A, DESK B and PUPPET fixed.
- Notice · 3 min. Show the two desk markers and puppet marker on the paper room. Ask “What can be between two desks?” Keep the named landmarks unmoved.
- Model · 4 min. Deal one card to each of two trays, then show the first tray in the open space between DESK A and DESK B. Say “the tray is between these two desks”, naming both.
- Guide · 5 min. Child finishes dealing four cards into 2/2, puts the second tray beside the fixed puppet and describes its place. An adult moves a tray only on the child's directions.
- Independent route · 7 min. Day 174 A/B/C uses a model room, puppet rehearsal or paper campsite. Require equal groups and two relational location statements, not handwriting or body movement.
- Reason check · 4 min. Shift a tray away from both desks while keeping landmarks fixed. Ask if “between the desks” is still true, and which physical relation changed.
- Exit · 2 min. Child gives one group count and one named landmark relation. If “between” lacks a reference, ask “between which two?” in a later new case.