Engine Maintenance & Repair Scaffolded Phenomena-Based Lesson: Cylinder Ridge Reaming, Plateau Cross-Hatch Honing, and Piston Ring Seating Presentation | Small Gas Engine | 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 Small Gas Engine (grades 9–12) chapter Engine Maintenance & Repair, built around the phenomenon Cylinder Ridge Reaming, Plateau Cross-Hatch Honing, and Piston Ring Seating. 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 Small Gas Engine, grades 9–12.

Sample question“Why must a technician use a ridge reamer to cut away this top lip and hone a microscopic 45-degree diamond cross-hatch before installing new piston rings?”

Complete the set: Engine Maintenance & Repair Scaffolded Phenomena-Based Lesson: Cylinder Ridge Reaming, Plateau Cross-Hatch Honing, and Piston Ring Seating Teacher Discussion Guide; Engine Maintenance & Repair Scaffolded Phenomena-Based Lesson: Cylinder Ridge Reaming, Plateau Cross-Hatch Honing, and Piston Ring Seating Student Response Sheet. Original version: Engine Maintenance & Repair Phenomena-Based Lesson: Cylinder Ridge Reaming, Plateau Cross-Hatch Honing, and Piston Ring Seating Presentation.