Format the approved text below WITHOUT rewriting, adding claims or changing marks. Create editable DOCX for the lesson/worksheet/key and a six-slide classroom PPTX with notes, readable text and original approved diagrams. Keep the teacher key separate. Add the official source URL and printed pages. Report honestly which downloadable files actually exist. If native PDF conversion is unavailable, label any independently generated PDF a content companion, not a native export. Check all pages, visible-text parity and slide bounds. Do not publish or upload.
APPROVED TEXT AND IMAGES: [insert teacher-approved material]
