Linear & Angular Technical Dimensioning Phenomena-Based Lesson: Transmission Shafts Jam from Chain-Dimension Tolerance Stack-Up Teacher Discussion Guide | Computer Aided Drafting I | Grades 9–12

This is the teacher discussion guide, with lesson flow, facilitation questions, anticipated student ideas and model explanations for leading the class discussion for the Phenomena-Based Lesson in the Computer Aided Drafting I (grades 9–12) chapter Linear & Angular Technical Dimensioning, built around the phenomenon Transmission Shafts Jam from Chain-Dimension Tolerance Stack-Up. It is sold separately from the other two parts of the set.

Complete the set: Linear & Angular Technical Dimensioning Phenomena-Based Lesson: Transmission Shafts Jam from Chain-Dimension Tolerance Stack-Up Presentation; Linear & Angular Technical Dimensioning Phenomena-Based Lesson: Transmission Shafts Jam from Chain-Dimension Tolerance Stack-Up Student Response Sheet. Scaffolded version: Linear & Angular Technical Dimensioning Scaffolded Phenomena-Based Lesson: Transmission Shafts Jam from Chain-Dimension Tolerance Stack-Up Teacher Discussion Guide.

Sections: Dimension / Standard; What Students Do; Iteea Stel; Slides; Segment; Focus Activity & Instructional Goal; Anchoring Driving Question (student Sensemaking):; Teacher Script (read Aloud To Introduce Phenomenon):. Sample item: “• Tier 1 Observation: If five sequential steps on a shaft each have a legal tolerance of ±0.005 inches and are dimensioned end-to-end in a chain, what is the worst-case total error at the fifth featur”

What's inside: Teacher Discussion Guide (editable .doc + PDF, about 1,957 words, 7 pages); answer key / model answers for the teacher.

Standards: Aligned to ITEEA Standards for Technological and Engineering Literacy for Computer Aided Drafting I, with embedded engineering design practices and career-readiness skills.

Resource type: Phenomena-Based Lesson – Teacher Discussion Guide. Format: editable Microsoft Word file plus a ready-to-print PDF.

Classroom use: Open with the phenomenon slide show, let students record ideas on the response sheet, and lead the discussion with the teacher guide. Built for Computer Aided Drafting I, grades 9–12.

Format note: These files are delivered in Microsoft Office formats (Word and/or PowerPoint). If you open a worksheet that includes tables in Apple Pages or another non-Microsoft app, table formatting may not display correctly. For best results, use Microsoft Word or PowerPoint (or upload the file to Google Docs). If you run into any formatting issues, contact us and we can send a PDF version.