Teacher copy: This page may include teaching prompts or answer keys. Answer keys in this public library can be viewed by anyone. Give learners a clean prompt, use checks as formative evidence, and change a case locally when prior access matters.
Target/codes: independently change only branch B’s ending in a new triangle fork so A remains LEFT and B becomes RIGHT; AC9AMAFD01, AC9AMAFC01. Prepare:public Check I, I A4, broad triangle cards. Keep key closed.
Welcome · 3 min. This new paper puzzle shows what to teach next; there is no reading-speed score.
Access · 4 min. Show START TRIANGLE MIDDLE, A TRIANGLE LEFT, B TRIANGLE LEFT. Read brief: “Keep A LEFT. Make B RIGHT.” Do not solve it.
Independent plan · 5 min. Child chooses which branch must change and what stays.
Child response · 7 min. Child draws, places, points or directs an adult to show both endings, then explains one held and one changed part. Save first response.
Self-check · 4 min. Ask child to name START, A and B positions without confirming correctness.
Close · 2 min. Keep first response before key; supplementary Day 25 examples are After Check only.
