Geometric Construction Techniques Scaffolded Phenomena-Based Lesson: The Bracket Arc That Was Drawn by Eye: GB-14 Presentation | Pre-Engineering Drafting and Design | 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 Pre-Engineering Drafting and Design (grades 9–12) chapter Geometric Construction Techniques, built around the phenomenon The Bracket Arc That Was Drawn by Eye: GB-14. 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.

Complete the set: Geometric Construction Techniques Scaffolded Phenomena-Based Lesson: The Bracket Arc That Was Drawn by Eye: GB-14 Teacher Discussion Guide; Geometric Construction Techniques Scaffolded Phenomena-Based Lesson: The Bracket Arc That Was Drawn by Eye: GB-14 Student Response Sheet.

Sections: Standards Alignment; Learning Goals; The Case - Read First; The Record - Dated Observations; How To Run The Talk; Talk Moves For The Teacher; The Record; Word Bank. Sample item: “1. What did the September 14, 2026 check say was missing from the drawing? Why did that matter before any part was cut?”

What's inside: SCAFFOLDED Student Slide Show (editable .pptx + PDF, 11 slides).

Standards: Aligned to Career & Technical Education (CTE) program-of-study competencies for STEM — engineering and technology (drafting and design), with embedded academic literacy and career-readiness skills.

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 Pre-Engineering Drafting and Design, 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.