Geometric Modification & Trimming Tools Scaffolded Phenomena-Based Lesson: Hydraulic Flange Stress-Riser Cracking & Bolt Circle Misalignment Presentation | Computer Aided Drafting I | 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 Scaffolded Phenomena-Based Lesson in the Computer Aided Drafting I (grades 9–12) chapter Geometric Modification & Trimming Tools, built around the phenomenon Hydraulic Flange Stress-Riser Cracking & Bolt Circle Misalignment. 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.

• What's inside: SCAFFOLDED Student Slide Show (editable .pptx + PDF, 17 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 Computer Aided Drafting I, grades 9–12.

Complete the set: Geometric Modification & Trimming Tools Scaffolded Phenomena-Based Lesson: Hydraulic Flange Stress-Riser Cracking & Bolt Circle Misalignment Teacher Discussion Guide; Geometric Modification & Trimming Tools Scaffolded Phenomena-Based Lesson: Hydraulic Flange Stress-Riser Cracking & Bolt Circle Misalignment Student Response Sheet. Original version: Geometric Modification & Trimming Tools Phenomena-Based Lesson: Hydraulic Flange Stress-Riser Cracking & Bolt Circle Misalignment Presentation.