Reaction Rates & Chemical Kinetics Scaffolded Phenomena-Based Lesson: Potassium Iodide Catalyzed Elephant Toothpaste Foam Eruption 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 Reaction Rates & Chemical Kinetics, built around the phenomenon Potassium Iodide Catalyzed Elephant Toothpaste Foam Eruption. 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: Reaction Rates & Chemical Kinetics Scaffolded Phenomena-Based Lesson: Potassium Iodide Catalyzed Elephant Toothpaste Foam Eruption Presentation; Reaction Rates & Chemical Kinetics Scaffolded Phenomena-Based Lesson: Potassium Iodide Catalyzed Elephant Toothpaste Foam Eruption Student Response Sheet. Original version: Reaction Rates & Chemical Kinetics Phenomena-Based Lesson: Potassium Iodide Catalyzed Elephant Toothpaste Foam Eruption 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: “A catalyst speeds up a reaction by lowering the ____________.”

What's inside: SCAFFOLDED Teacher Discussion Guide (editable .docx + PDF, about 1,023 words, 3 pages); answer key / model answers for the teacher.

Standards: HS-PS1-5 — Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or the concentration of the reacting particles on the rate at which a reaction occurs. HS-PS1-6 — Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium.

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.