Casting & Molding Processes Phenomena-Based Lesson: The Hollow Shrunken Gear Hub, The Flashed 150-Ton Injection Mold & The 3D-Printed Conformal Cooling Breakthrough Teacher Discussion Guide | Manufacturing Systems | 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 Manufacturing Systems (grades 9–12) chapter Casting & Molding Processes, built around the phenomenon The Hollow Shrunken Gear Hub, The Flashed 150-Ton Injection Mold & The 3D-Printed Conformal Cooling Breakthrough. It is sold separately from the other two parts of the set.

Complete the set: Casting & Molding Processes Phenomena-Based Lesson: The Hollow Shrunken Gear Hub, The Flashed 150-Ton Injection Mold & The 3D-Printed Conformal Cooling Breakthrough Presentation; Casting & Molding Processes Phenomena-Based Lesson: The Hollow Shrunken Gear Hub, The Flashed 150-Ton Injection Mold & The 3D-Printed Conformal Cooling Breakthrough Student Response Sheet. Scaffolded version: Casting & Molding Processes Scaffolded Phenomena-Based Lesson: The Hollow Shrunken Gear Hub, The Flashed 150-Ton Injection Mold & The 3D-Printed Conformal Cooling Breakthrough Teacher Discussion Guide.

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: “• According to Chvorinov's Rule (t = B[V/A]^2), a Riser must have a larger ___________-to-Surface-Area ratio (V/A) than the casting so the riser freezes *last*.”

What's inside: Teacher Discussion Guide (editable .docx + PDF, about 2,334 words, 8 pages); answer key / model answers for the teacher.

Standards: Aligned to ITEEA Standards for Technological and Engineering Literacy for Manufacturing Systems, 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 Manufacturing Systems, 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.