# Build a link-repair desk

**Prepare:** Invent a full ordinary purpose/key/page set. Adult intentionally supplies one conflicting link and labels it “practice mismatch”.
**Make / try:** Child predicts its output, identifies the intended conflict and directs one change. Run or paper-trace old and repaired rules; then check the other branch.
**Useful outcome / next:** A specific explained repair, with predictions distinct from observations. If a child fixes a picture instead of the link, isolate the link strip; don't manufacture success.

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