Unit 1: The Ray Model of Light
Day

Thursday, August 28

1

Focus Question(s):
 What's SLC Physics all about?
 What is the predictable pattern by which light reflects off a surface?
 How can the pattern be used to predict the path of light
Activities:
 Course Introduction, Materials, Google Survey on Chromebooks, Logistical tasks
 Lab and lab notebooks
 Discuss Reflection; demos
 Chromebooks: discuss HW: show TPC, Tutorial, Reading Assignment; WebAssign login and password change
 Lab RO1: Reflection Lab; do and postlab
 Activity: Firing My Laser Challenge (packet, p. 3)
 Neighbor Nudge: Law of Reflection
Homework:
 Do WebAssign survey
 WebAssign contract: get signed by parents
 Read Lesson 1 of Reflection Chapter from TPC Tutorial
 Read SLC Physics Survival Packet; indicate Qs in side margin
Help:

Day

Tuesday, September 2

2

Focus Question(s):
 What is meant by the term image?
 How and/or why is an image formed?
 What are the characteristics of plane mirror images?
Activities:
 Discuss Law of Reflection; two Neighbor Nudges
 Preview of MOP; information sheet (Packet, pp. 46)
 Entertain questions left on WebAssign
 Lab RO2: Images
 Postlab: What is an image? How is an image formed? How do you describe it? Parallax demo
Homework:
 Read Lesson 2a2d of Reflection Chapter from TPC Tutorial
 Do MOP: RM1, RM2
Help:

Day

Thursday, September 4

3

Focus Question(s):
 Why is an image sometimes not formed?
 How can one use a ray diagram model to predict how light travels from object to mirror to observer's eye?
 How can one use a ray diagram model to predict what portion of a mirror would be required to view an image of yourself?
Activities:
 Discuss specular vs. diffuse reflection. Demos. Diagramming.
 Ray Diagrams (Packet, pp. 78)
 Any Qs on Survival Packet?
 Lab RO3: Six Foot Man Problem (p. 37); submit results via Google form
 Postlab Six Foot Man Problem; review/discuss data; do p. 38
Homework:
 Do MOP: RM3, RM4; record success codes on p. 5 of packet
 Get caught up on lab work, MOPs, Readings
Help:

Day

Monday, September 8

4

Focus Question(s):
 Where is the middle image located for a right angle mirror?
 How does light get from object to mirror to our eye when sighting at a middle image?
 Where are the images for a parallel mirror system located?
 How can one use a ray diagram model to predict what
portion of an image can be seen by an observer or what images can be
seen by an observer?
Activities:
 Walkthrough: Multiple Mirror Systems (as you enter room)
 Introduce right angle mirrors; primary vs. secondary images
 Lab RO4: Right Angle Mirror Lab (pp. 3940); do and pool class data
 PostLab; do some ray diagraming for right angle mirrors (p. 10 of Packet)
 Discuss parallel mirror systems: Infinity (p. 13, Situation 1)
 Physics Interactives: Who Can See Who? on Chromebooks
Homework:
 Read Lesson 2e2f of Reflection Chapter from TPC Tutorial
 Read Lesson 3a3d of Reflection Chapter from TPC Tutorial
Help:

Day

Wednesday, September 10

5

Focus Question(s):
 What mathematical equation(s) describes the distance from the mirror to the images for a parallel mirror system?
 How does object distance affect the characteristics of a concave mirror image?
 How does the angle between two adjoining mirrors affect the number of images that are formed?
Activities:
 Parallel Mirror Problem Revisited (p. 13, Situation 2); give challenge
 Activity: Introducing Concave and Convex Mirrors
 Activity: Exploring Curved Mirror Systems (pp. 1516)
 Discuss anatomy of a curved mirror, principal rays; demos
 Lab Test: Improving Your Image
Homework:
 Challenge: Parallel mirror equation (spend <20 minutes determining the formula)
 Do MOP: RM5, RM6
 Read Lesson 3e3f of Reflection Chapter from TPC Tutorial
Help:

Day

Friday, September 12

6

Focus Question(s):
 How can a ray diagram model be used to describe how the object distance affects the characteristics of a curved mirror image?
 How can a mathematical model be used to describe how object distance affects the characteristics of the image?
 In what way do experimental data support the mathematical model relating object and image distance?
Activities:
 Demonstration  Rules of Reflection for Curved Mirrors
 Ray Diagrams for Concave Mirrors (pp. 1718)
 Mathematical Modeling of Concave Mirrors (p. 20 of Packet)
 Lab RO5: Finding Smiley Lab (pp. 3233); collect data and enter into Desmos
Homework:
 Read Lesson 4b4c of Reflection Chapter from TPC Tutorial
 Do MOP: RM5, RM6
 WebAssign  Mirror Equation Problems 1 (due Thursday, 9/18)
 Bring Calculator
Help:

Day

Tuesday, September 16 (shortened periods; late arrival)

7

Focus Question(s):
 How can a ray diagram model be used to describe how the object distance affects the characteristics of a curved mirror image?
 How
can a mathematical model be used to predict the image characteristics
of a curved mirror image?How does object distance affect the
characteristics of a concave mirror image?
Activities:
 Discuss Lab Notebooks (data and evidence, labeling, units, referencing data)
 Ray Diagrams for Convex Mirrors (p. 19 of Packet)
 Chromebooks: Name That Image
 Mirror Equation Practice
 Plane Mirror Quiz (~25 minutes)
Homework:
 WebAssign  Mirror Equation Problems 1
 Do MOP: RM8, RM9; Reflection and Mirrors codes due soon
Help:

Day

Thursday, September 18

8

Focus Question(s):
 How does object distance affect the magnification of a concave mirror image?
 How can a mathematical model be used to explain the relationship between object distance and magnification?
Activities:
 Any MOP Codes? (1st chance of 2 chances)
 Mirror Equation: Two equations and two unknowns (pp. 2122 of Packet)
 Science Reasoning Probe (25 minutes)
 Demos: Foo Ling Yu, Pendulum, Mirage, Powers of 10 Magnification
 Pass out Quarter 1 Project with handout; discuss
 Lab RO6: Mirror Magnification Lab  begin data collection
Homework:
 WebAssign  Mirror Equation Problems 2 (due Wed, 9/24)
 Complete MOP  Reflection and Mirrors (to be collected)
 Begin Reading Lesson 1 of Refraction Chapter from TPC Tutorial
Help:

Day

Monday, September 22

9

Focus Question(s):
 How does object distance affect the magnification of a concave mirror image?
 How can a mathematical model be used to explain the relationship between object distance and magnification?
 What is refraction?
 Why does refraction occur?
 When does refraction not occur? How does light refract?
Activities:
 Hand in MOP Codes for Reflection and Mirrors (2nd chance of 2 chances)
 Mirror Equation: Two equations and two unknowns (p. 21 of Packet)
 Lab RO6: Mirror Magnification Lab  begin data collection
 Activity: Introduction to Refraction (pp. 2324 of Packet)
Homework:
 WebAssign  Mirror Equation Problems 2 (due at 8 AM on Wed, 9/24)
 Complete Reading Lesson 1 of Refraction Chapter from TPC Tutorial
 Complete Lab RO6
 Prep for Mirror Quest
Help:

Day

Wednesday, September 24

10

Focus Question(s):
 How can one use a conceptual model to predict the direction that a light ray will refract at a boundary?
 What is the mathematical model that describes the refraction of light?
 What is the logical origin for such an odd law of refraction?
Activities:
 Review direction of bending, optical density, index of refraction, light speed; do some ray tracing
 Lab RO7  How Much? Lab  collect/analyze data
 Discuss Snell's Law
 Why Snell's Law?  demo Least Time Principle at The Physics Classroom
 Quiz on Curved Mirrors (~20 minutes)
Homework:
 Read Lesson 2a2d of Refraction Chapter at TPC
 MOP  Refraction Module  do RL1  RL3
Help:

Day

Monday, September 29

11

Focus Question(s):
 What is this sine stuff all about?
 How can one use Snell's Law to predict the path of light at a boundary or to determine the index of refraction of a medium?
Activities:
 Refraction Demos  A&W Root Beer, Stirring Rod, Fish Spearing
 SOH CAH TOA (pp. 2526)
 Do SOH CAH TOA WebAssign
 Return Quiz/Key
 Snell's Law (pp. 27)
 Quarter 1 Project: some brainstorming
Homework:
 Read Lesson 2a2d of Refraction Chapter at TPC
 WebAssign  SOH CAH TOA
 WebAssign  Refraction 1
Help:

Day

Wednesday, October 1

12

Focus Question(s):
 How can one use Snell's Law to predict the path of light at a boundary or to determine the index of refraction of a medium?
 How can SOH CAH TOA and Snell's Law be combined to analyze a complex physical situation involving refraction?
Activities:
 Snell's Law (p. 28)
 Layer Problem (p. 29)
 Lab RO8: The Unknown n Lab
 Combine Snell's Law and SOH CAH TOA (p. 30)
 Quarter 1 Project: more brainstorming with some exhibit details
Homework:
 Read Lesson 3 of Refraction Chapter at TPC
 WebAssign  Refraction 2
Help:

Day

Friday, October 3

13

Focus Question(s):
 How can SOH CAH TOA and Snell's Law be combined to analyze a complex physical situation involving refraction?
 Are there conditions under which the incident light
ray undergoes reflection but not transmission at the boundary? If so,
then what are those conditions?
Activities:
 SOH CAH TOA and Snell's Law  two Hendy Specials
 Refraction Interactive: Focus Question 2 (above)
 Discuss Total Internal Reflection: R & R; TIR def'n, two conditions; diagramming; demos
 Quarter 1 Project: select an exhibit to identify a
goal and list required materials (specifics needed) and needs (e.g.,
wiring, special woodworking)
Homework:
 WebAssign  Refraction 3
 MOP  Refraction Module  do RL5  RL6; codes RL1RL6 (except RL4) to be collected.
Help:

Day

Tuesday, October 7

14

Focus Question(s):
 How can one predict the minimum angle at which total internal reflection occurs?
Activities:
 Submit MOP Codes  1st chance of 2 chances
 Lab RO9  A Critical Lab
 Critical Angle Calculations: discuss and practice with WebAssign
 Refraction Quiz (20 minutes)
 Quarter 1 Project: continue to detail the project specifications with a detailed diagram/description
Homework:
 Work on details for Quarter 1 Project  Design Stage
 WebAssign  Refraction 4
 MOP  Refraction Module  success codes for RL1RL6 (except RL4) to be collected.
Help:

Day

Thursday, October 9

15

Focus Question(s):
 In what ways can one describe a vibration?
 In what manner does mass affect the period and the
frequency of a vibrating object? Can the relationship be described by
an equation?
Activities:
 Submit MOP Codes  2nd chance of 2 chances
 Start Unit 2 : Mechanical Model of Waves:
== Demo: Mass on a Spring
== Period, Amplitude and Frequency
== The Wiggles Lab
 Return Quiz and Quiz Key
 Quarter 1 Project: Work on details of Quarter 1 Project  Design Stage
Homework:
Help:

Day

Monday, October 13

16

Focus Question(s):
 How does the position of a vibrating mass fluctuate with time? Does the
period of a vibrating mass change over time? Does the amplitude of a
vibrating mass change over time? How does increasing mass affect the
period of its vibrations?
Activities:
 Lab WM2  Vibrating Mass Lab
 Unit 1 Test (45 minutes)
Homework:
 Read Lesson 0a, 0b, and 0d of the Waves Chapter at The Physics Classroom
Help:

