Goal: directly compare two lengths using a common start. Proposed code: AC9MFM01. Prepare: Card 131 and practice Set L1.
- Name attribute · 3 min. Show two safe broad strips; ask whether the question concerns length, colour or weight. Say “Which reaches farther from the same start?”
- Model · 4 min. Lay P and Q at the printed start line; point along each edge without announcing answer from colour.
- Guide · 5 min. Child/directing partner checks near ends meet; if shifted, reset before deciding. Adult gives neutral touch/description if needed.
- Independent compare · 7 min. Child chooses paper bookmark, model bridge or sign strip route, aligns a pair and states which is longer with the other strip named.
- Check · 4 min. Swap the two strips' vertical order; ask if length changed. Require a direct aligned reason, not “top one.”
- Exit · 2 min. Child shows the start edge used. If ends were misaligned, begin Day 132 with two equal strips.