Relative Velocity & Reference Frames Phenomena-Based Lesson: River-Crossing Trials: One Boat, Three Speeds Teacher Discussion Guide | Physics | 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 high school Physics (grades 9–12) chapter Relative Velocity & Reference Frames, built around the phenomenon River-Crossing Trials: One Boat, Three Speeds. It is sold separately from the other two parts of the set.

Complete the set: Relative Velocity & Reference Frames Phenomena-Based Lesson: River-Crossing Trials: One Boat, Three Speeds Presentation; Relative Velocity & Reference Frames Phenomena-Based Lesson: River-Crossing Trials: One Boat, Three Speeds Student Response Sheet. Scaffolded version: Relative Velocity & Reference Frames Scaffolded Phenomena-Based Lesson: River-Crossing Trials: One Boat, Three Speeds Teacher Discussion Guide.

Sections: Standards Alignment; Learning Goals; The Case - Read First; The Record - Dated Observations; How To Run The Discussion; Talk Moves For The Teacher; The Record; Word Bank. Sample item: “2. The far-bank observer confirms the dock's Trial 1 vector, but the float observer does not. What decides which observers agree?”

What's inside: Teacher Discussion Guide (editable .docx + PDF, about 1,978 words, 6 pages).

Standards: HS-PS2-1 — Analyze data to support the claim that Newton’s second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration.

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 Physics, 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.