Two-Dimensional Geometric Primitives Scaffolded Phenomena-Based Lesson: High-Torque Hex Fastener Stripping & Tangent Pulley Drive Geometry 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 Scaffolded Phenomena-Based Lesson in the Computer Aided Drafting I (grades 9–12) chapter Two-Dimensional Geometric Primitives, built around the phenomenon High-Torque Hex Fastener Stripping & Tangent Pulley Drive Geometry. This scaffolded version adds sentence frames and extra supports for students who need them. It is sold separately from the other two parts of the set.

Complete the set: Two-Dimensional Geometric Primitives Scaffolded Phenomena-Based Lesson: High-Torque Hex Fastener Stripping & Tangent Pulley Drive Geometry Presentation; Two-Dimensional Geometric Primitives Scaffolded Phenomena-Based Lesson: High-Torque Hex Fastener Stripping & Tangent Pulley Drive Geometry Student Response Sheet. Original version: Two-Dimensional Geometric Primitives Phenomena-Based Lesson: High-Torque Hex Fastener Stripping & Tangent Pulley Drive Geometry Teacher Discussion Guide.

Sections: Scaffolded Edition (grades 7–8) • Computer Aided Drafting I; Standard; What Students Do; Iteea Stel; Section 3: Scaffolded Talk Moves; Talk Move; What To Ask The Class; Common Misconception (flawed Claim). Sample item: “To make a nut fit a wrench across its flats, choose ____________ about circle.”

What's inside: SCAFFOLDED Teacher Discussion Guide (editable .doc + PDF, about 1,347 words, 4 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.