Balancing Chemical Equations Scaffolded Phenomena-Based Lesson: Detonation of Solid Sodium Azide in Millisecond Airbag Inflation Teacher Discussion Guide | Chemistry | 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 Scaffolded Phenomena-Based Lesson in the high school Chemistry (grades 9–12) chapter Balancing Chemical Equations, built around the phenomenon Detonation of Solid Sodium Azide in Millisecond Airbag Inflation. 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: Balancing Chemical Equations Scaffolded Phenomena-Based Lesson: Detonation of Solid Sodium Azide in Millisecond Airbag Inflation Presentation; Balancing Chemical Equations Scaffolded Phenomena-Based Lesson: Detonation of Solid Sodium Azide in Millisecond Airbag Inflation Student Response Sheet. Original version: Balancing Chemical Equations Phenomena-Based Lesson: Detonation of Solid Sodium Azide in Millisecond Airbag Inflation Teacher Discussion Guide.

Sections: Section 1: Three-dimensional Learning Alignment (ngss); NGSS Dimension; Scaffolded Three-dimensional Learning Goal; Section 3: Scaffolded Science Talk Moves Matrix; Scaffolded Talk Move; Verbatim Facilitation Prompt & Talk Goal; Everyday Student Misconception (flawed Claim); Scientific Evidence & Intuitive Correction. Sample item: “In a balanced equation, the number of each ____________ is the same on both sides.”

What's inside: SCAFFOLDED Teacher Discussion Guide (editable .docx + PDF, about 1,039 words, 3 pages); answer key / model answers for the teacher.

Standards: HS-PS1-7 — Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.

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 high school Chemistry, 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.