LESSON PLAN 59: Practical Application—Traffic Control Program

LESSON PLAN 59: Practical Application—Traffic Control Program

Lesson Details

Strand: 3.0 Software Development
Sub Strand: 3.3 Identifiers and Operators
Duration: 40 minutes (Single lesson)
Lesson: 6 of 6
Class Level: Grade 10

Key Inquiry Question (Lesson Starter)

How can programming solve real-world problems like traffic control?

Specific Learning Outcomes

By the end of the lesson, the learner should be able to:

• a) write and execute a program on traffic control that accepts input and displays output,
• b) apply identifiers and operators in solving real-world problems,
• c) develop print or digital content to educate peers on the role of identifiers and operators in programming,
• d) demonstrate responsibility and creativity in programming,
• e) appreciate the role of programming in solving societal problems.

Selected Learning Experiences

Introduction (5 minutes)

• Review homework: Quick check of precedence problems and programs (restaurant bill, circle area, average calculator)
• Present key inquiry question: “How can programming solve real-world problems like traffic control?”
• Real-world discussion: “What happens at traffic lights? How do they decide when to change?”
• Show image/video of traffic light system (if available via projector)
• Brainstorm: What factors might affect traffic light decisions?
  • Number of vehicles waiting
  • Time of day (rush hour vs quiet time)
  • Emergency vehicles present
  • Pedestrian crossings
• Brief sharing: “Has anyone been stuck in traffic? What would help?”
• Introduce lesson focus: Creating a program that makes traffic control decisions using everything we’ve learned

Development Activities (30 minutes)

Activity 1: Analysing the Traffic Control Problem (8 minutes)

• Write and execute a program on traffic control that accept input and display output
• Teacher projects traffic control scenario on screen or writes on whiteboard
• Class discusses requirements together

Problem Scenario: “Design a simple traffic control system that decides how long a green light should stay on based on the number of vehicles waiting.”

Analysis Questions (Teacher asks, students respond, write answers on board):

1. What information (input) does the system need?
   • Number of vehicles waiting (integer)
   • Time of day – optional (string or integer)
   • Emergency vehicle present? (boolean/string)
2. What decisions must the system make?
   • Calculate appropriate green light duration
   • Decide if emergency override needed
   • Determine if traffic is heavy or light
3. What should the system display (output)?
   • Current light colour
   • Duration green light will stay on
   • Traffic status (light/medium/heavy)
   • Any special alerts (emergency)
4. What identifiers (variables) do we require? Write on board:

python

  vehicle_count     # integer – number of vehicles

   light_duration    # integer – seconds for green light

   emergency_present # string – “yes” or “no”

   traffic_status    # string – description

   light_color       # string – “GREEN”

“`

5. **What operators will we use?**

   – **Arithmetic:** calculate duration (*, +, -)

   – **Relational:** check conditions (>, <=, ==, >=)

   – **Logical:** combine conditions (and, or)

   – **Assignment:** store values (=, +=)

**Simple Logic Example on Whiteboard:**

“`