Forty-Five Seconds to Make It Clear — Lab history & changelog

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Origin story

This lab was created around a focused learner practice: Turn one real idea into a spoken explanation for a real audience. By the end, you can select the details that matter to a listener, compare audience-specific versions, and explain what you removed, protected, accepted, or rejected rather than assuming shorter always means better. Its original Draft package brought the activity and supporting materials together for review before the canonical lab-page migration.

Change log

2026-09-06

Bound the Lab Notebook to the canonical Activity’s completion and extension criteria, standardized result criteria as checklists, and synchronized the Notebook from that source.

Moved learner-facing metadata, materials, relationships, and activity content into lab.md; retained this README as the lab origin story and change log.