Micrometers & Dial Indicators Phenomena-Based Lesson: The Shafts That 'Grew' Overnight Presentation | Machining Technology | Grades 9–12

This is the student-facing slide presentation that introduces the phenomenon, walks the class through observations and driving questions, and frames the evidence students will use for the Phenomena-Based Lesson in the Machining Technology (grades 9–12) chapter Micrometers & Dial Indicators, built around the phenomenon The Shafts That 'Grew' Overnight. It is sold separately from the other two parts of the set.

• What's inside: Student Slide Show (editable .pptx + PDF, 11 slides).
• Resource type: Phenomena-Based Lesson – Presentation. Format: editable Microsoft PowerPoint 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 Machining Technology, grades 9–12.

Sample question“3. Why did the three October 13 shafts near the chuck end still read inside the limits, even with the same dirty faces?”

Complete the set: Micrometers & Dial Indicators Phenomena-Based Lesson: The Shafts That 'Grew' Overnight Teacher Discussion Guide; Micrometers & Dial Indicators Phenomena-Based Lesson: The Shafts That 'Grew' Overnight Student Response Sheet. Scaffolded version: Micrometers & Dial Indicators Scaffolded Phenomena-Based Lesson: The Shafts That 'Grew' Overnight Presentation.