Wave Interference & Diffraction Phenomena-Based Lesson: Two Colors, One Bench: Fringes That Measure Wavelength Presentation | Physics II | 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 Phenomena-Based Lesson in the Physics II (grades 9–12) chapter Wave Interference & Diffraction, built around the phenomenon Two Colors, One Bench: Fringes That Measure Wavelength. It is sold separately from the other two parts of the set.

• What's inside: Student Slide Show (editable .pptx + PDF, 9 slides).
• 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 Physics II, grades 9–12.

Sample question“Q1. Only the laser changed between April 6 and April 8. What in the two fringe strips proves the red light has the longer wavelength, without using either printed wavelength?”

Complete the set: Wave Interference & Diffraction Phenomena-Based Lesson: Two Colors, One Bench: Fringes That Measure Wavelength Teacher Discussion Guide; Wave Interference & Diffraction Phenomena-Based Lesson: Two Colors, One Bench: Fringes That Measure Wavelength Student Response Sheet. Scaffolded version: Wave Interference & Diffraction Scaffolded Phenomena-Based Lesson: Two Colors, One Bench: Fringes That Measure Wavelength Presentation.