Precision Measurement & Tolerances Phenomena-Based Lesson: The 0.003-Inch Caliper Squeeze Error, The Liquid-Nitrogen Shrink Fit & The +57% GD&T Bonus Teacher Discussion Guide | Introduction to Technology and Engineering | 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 Introduction to Technology and Engineering (grades 9–12) chapter Precision Measurement & Tolerances, built around the phenomenon The 0.003-Inch Caliper Squeeze Error, The Liquid-Nitrogen Shrink Fit & The +57% GD&T Bonus. It is sold separately from the other two parts of the set.

Complete the set: Precision Measurement & Tolerances Phenomena-Based Lesson: The 0.003-Inch Caliper Squeeze Error, The Liquid-Nitrogen Shrink Fit & The +57% GD&T Bonus Presentation; Precision Measurement & Tolerances Phenomena-Based Lesson: The 0.003-Inch Caliper Squeeze Error, The Liquid-Nitrogen Shrink Fit & The +57% GD&T Bonus Student Response Sheet.

Sections: Dimension / Standard; Performance Expectation & Practices Alignment; Slides; Segment; Focus Activity & Instructional Goal; Anchoring Driving Question (student Sensemaking):; Teacher Script (read Aloud To Introduce Phenomenon):; Talk Move Category. Sample item: “• A 40-TPI Vernier Micrometer advances 0.025" per revolution to resolve 0.0001", using a Ratchet Stop to eliminate ____________ error.”

What's inside: Teacher Discussion Guide (editable .docx + PDF, about 2,199 words, 8 pages); answer key / model answers for the teacher.

Standards: Aligned to ITEEA Standards for Technological and Engineering Literacy for Introduction to Technology and Engineering, 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 Introduction to Technology and Engineering, 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.