Ray Optics

Day 1 of Ray Optics

1. Introduction to unit; distinguish between reflection and refraction
2. Lab 1 - The Law of Reflection
   Do and post-lab
3. Discuss law of reflection and terminology (normal, incident/reflected rays, angles of incidence/reflection)
4. Pair Practice: Light Reflection Think Sheet
5. Concept Builder: Law of Reflection (Apprentice Level only)

1. Reading: Physics Classroom Tutorial, Reflection and the Ray Model of Light: Lesson 1, Parts a - c
2. Minds On Physics: Mission RM1 on Law of Reflection

Day 2 of Ray Optics

1. Lab 2 - Images
   Do and post-lab; discuss what an image is and how an image is formed; animation
2. Individual/Guided: Plane Mirror Image Formation Think Sheet
3. Draw your first ray diagram to show how light travels from object to mirror to eye as you sight at an image.

1. Reading: Physics Classroom Tutorial, Reflection and the Ray Model of Light: Lesson 2, Parts a-c
2. Minds On Physics: Mission RM2 on Plane Mirror Images

Day 3 of Ray Optics

1. Individual/Guided: Plane Mirror Ray Diagrams Think Sheet
2. Lab 3 - The Six Foot Person Problem
   Do and post-lab; collect and compare class data; draw conclusion
3. Start Physics Interactives: Plane Mirror Images (with Built-in Progress Tracking)

1. Reading: Physics Classroom Tutorial, Reflection and the Ray Model of Light: Lesson 2, Part d
2. Finish Physics Interactives: Plane Mirror Images

Day 4 of Ray Optics

1. Review Lab 3
2. Pair Practice: What Portion ... and Who Can ... Think Sheet
   Complete and check answers; then do ...
3. Physics Interactives: Who Can See Who? with Concept Checker
   Do and process; then complete Concept Checker
4. If time allows, start Concept Builder: Who Can See Who?

1. Reading: Physics Classroom Tutorial, Reflection and the Ray Model of Light: Lesson 2, Part d
2. Concept Builder: Who Can See Who?

Day 5 of Ray Optics

1. Discuss diffuse vs. specular reflection; demonstrations; use Specular vs. Diffuse Reflection Think Sheet
2. Start Curved Mirrors:
   Lab 4 - Exploring Curved Mirrors
   Do and post-lab
3. Quick Quiz on Learning Outcomes #1-4

1. Reading: Physics Classroom Tutorial, Reflection and the Ray Model of Light: Lesson 3, Parts a - c
2. Minds On Physics: Mission RM4 on Regular vs. Diffuse Reflection

Day 6 of Ray Optics

1. Discuss concave vs. convex, terminology (principal axis, focal point, center of curvature, f, and R); rules of reflection; use  Spherical Mirrors Think Sheet
2. Physics Interactives: Concave Mirror Image Formation (as a demonstration)
3. Lab 5 - Finding Smiley
   Do and post-lab 

1. Reading: Physics Classroom Tutorial, Reflection and the Ray Model of Light: Lesson 3, Parts d-e
2. Complete Lab 5

Day 7 of Ray Optics

1. Physics Interactives: Optics Bench - Mirrors with Student Activity Sheet
   Do and process
2. Guided Practice: Ray Diagrams for Concave Mirrors Think Sheet
3. Concept Checker: Optics Bench - Mirrors

1. Review was needed: Physics Classroom Tutorial, Reflection and the Ray Model of Light: Lesson 3, Parts d-e
2. Minds On Physics: Mission RM6 on Concave Mirror Images
3. If not finished in class, complete Concept Checker: Optics Bench - Mirrors

Day 8 of Ray Optics

1. Discuss Convex Mirrors - image formation (demonstration); rules of reflection; nature of images
2. Guided/Individual Practice: Ray Diagrams for Convex Mirrors Think Sheet
3. Concept Builder: The Lost Art of Image Description (Curved Mirrors)

1. Reading: Physics Classroom Tutorial, Reflection and the Ray Model of Light: Lesson 4, Parts a-c
2. Minds On Physics: Mission RM9 on Convex Mirror Images

Day 9 of Ray Optics

1. Review; then Pair Practice: Object-Image Relations Think Sheet
   Do and check answers; then complete
2. Physics Interactives: Name That Image (with built-in Task Tracking)
3. Quick Quiz on Learning Outcomes #5-#9

1. Complete all unfinished work
2. The refraction portion of the unit begins tomorrow!

Day 10 of Ray Optics

1. Lab 6 - Introduction to Refraction
   Do and process; discuss the what, when, how, why, and when not of refraction
2. Discuss refraction: boundary behavior; bending of light's path; media ∆ ==> speed ∆ ==> direction ∆; towards vs. away from the normal; angles of incidence and refraction
3. Pair Practice: Refraction Think Sheet

1. Reading: Physics Classroom Tutorial, Refraction and the Ray Model of Light: Lesson 1, Parts a-d
2. Minds On Physics: Mission RL1 on Meaning and Cause of Refraction

Day 11 of Ray Optics

1. Discuss the Direction of Bending
   Reason through rules for towards and away from normal if given relative speeds, relative densities, and relative n values
2. Guided/Individual Practice: Two Rules, Three Ways Think Sheet
   Do and check answers;; then start ...
3. Concept Builder: Refraction - Law Enforcement

1. Reading: Physics Classroom Tutorial, Refraction and the Ray Model of Light: Lesson 1, Parts e-f
2. Finish Concept Builder: Refraction - Law Enforcement if not completed in class

Day 12 of Ray Optics

1. Review; then allow some time to apply. Start:
   Minds On Physics: Mission RL2 on Light Speed and Refraction
   Minds On Physics: Mission RL3 on Optical Density, n, and Refraction
2. Lab 7 - How Much?
   Assign angles to different lab groups (all 2's ... 12°, 22°, 32°, 42°, 52°, etc, to one lab group; all 3s to another lab group, etc.); pool class data in a Google Sheet; inspect the two possible graphs; decide on best equation; don't give much attention to the meaning of sine (postpone for later)

1. Finish Mission RL2 and Mission RL3 if not completed in class

Day 13 of Ray Optics

1. Complete Lab 7 - How Much?
   Process results; develop a Snell's Law equation; define terms in the equation
2. Guided/Individual Practice: Index of Refraction Studies Think Sheet (selected Qs)
   Given a Sine Table and the path of light at a boundary, measure angles and determine the index of refraction of a material
3. Science Reasoning Center: Snell's Law

1. Reading: Physics Classroom Tutorial, Refraction and the Ray Model of Light: Lesson 2, Parts a-b
2. Complete Science Reasoning Center: Snell's Law

Day 14 of Ray Optics

1. Guided/Individual Practice: Complete Index of Refraction Studies Think Sheet (selected Qs)
2. Lab 8 - Determinging n Lab
   Given a prism, shine laser light through it; mark path of light. Construct normal and measure angles. Use Snell's law and a sine table to calculate the index of refraction. Repeat for a second prism.
3. Quick Quiz on Outcomes #10-#12

1. Complete analysis and write-up on Lab 8 - Determinging n Lab

Day 15 of Ray Optics

1. Physics Interactives: Refraction Simulation with Student Activity Sheet 
2. Discuss Total Internal Reflection
   What it is, when it happens (2 requirements; critical angle def'n and equation; clarify the three cases: angle of incidence 1) < critical angle, 2) = critical angle, and 3) > critical angle; demonstrations
3. Complete: Total Internal Reflection Concept Checker

1. Reading: Physics Classroom Tutorial, Refraction and the Ray Model of Light: Lesson 3, Parts b-c
2. If not done in class, complete Total Internal Reflection Concept Checker

Day 16 of Ray Optics

1. Review Critical Angle equation; a couple of practice problems
2. Pair Practice: Total Internal Reflection Think Sheet
3. Lab 9 - A Critical Lab
4. If time allows, start Concept Builder: Total Internal Reflection

1. Concept Builder: Total Internal Reflection
2. Minds On Physics: Mission RL5 on Total Internal Reflection

Day 17 of Ray Optics

1. Lab 10 - Exploring Lenses Lab
2. Discuss Lenses using Lenses Think Sheet; use whiteboard optics demonstrations where possible; demonstrate object-image relatioships
3. Minds On Physics: Mission RL7 on Converging vs. Diverging Lenses

1. Reading: Physics Classroom Tutorial, Refraction and the Ray Model of Light: Lesson 5, Parts a - c
2. If not done in class, complete Mission RL7

Day 18 of Ray Optics

1. Lab 11 - The L•O•S•T Art of Image Description
2. Discuss ray diagramming and object-image relationships using Ray Diagrams for Converging Lenses Think Sheet
3. Concept Builder: The L•O•S•T Art of Image Description (Converging Lenses)

1. Reading: Physics Classroom Tutorial, Reflection and the Ray Model of Light: Lesson 5, Parts d - e
2. If not done in class, complete Concept Builder: The L•O•S•T Art of Image Description (Converging Lenses)

Day 19 of Ray Optics

1. Physics Interactives: Optics Bench - Lenses with Student Activity Sheet
   Do and process; follow-up with the Concept Checker
2. Minds On Physics: Mission RL9 on Image Characteristics for Converging Lenses

1. Review as needed: Physics Classroom Tutorial, Refraction and the Ray Model of Light: Lesson 5, Parts d - e
2. Work on unfinished work

Day 20 of Ray Optics

1. Discuss diverging lenses; ray diagrams and object-image relationships; use Ray Diagrams for Diverging Lenses Think Sheet
2. Minds On Physics: Mission RL11 on Image Characteristics for Diverging Lenses
3. Review unit and discuss tomorrow's test

1. Prepare for Tomorrow's Test
2. Complete all unfinished work