README.md

Week 02: Variables - Scoreboard

📚 Learning Objectives

• Understand what variables are (containers for data)
• Create and name variables using meaningful names
• Store and update values in variables
• Use variables in print() statements
• Differentiate between strings and integers

🔗 Required Prior Knowledge

• Week 1: Using print() statements
• Week 1: Running Python programs in Thonny

⏱️ Lesson Flow (60-75 minutes)

Time	Activity	Description
0-10 min	Recap & Hook	Review Week 1, introduce "scoreboard" concept
10-20 min	New Concept: Variables	score = 0 is like Scratch's "set variable"
20-35 min	Guided Build	Build scoreboard together
35-55 min	Independent Challenges	Tasks A, B, C from student_tasks.md
55-60 min	Wrap-up	Show off scoreboards, preview Week 3

🎯 Success Criteria

• Student can create a variable with name = value
• Student can update variables (score = score + 10)
• Student can print variables and text together
• Student uses meaningful variable names

⚠️ Common Student Errors

1. Using undeclared variable

   print(score)  # NameError if score not created yet

2. Confusing strings vs numbers

   score = "100"  # String, not number
   score = score + 10  # TypeError

3. Typos in variable names

   score = 100
   print(scor)  # NameError

📊 Differentiation

Support:

• Provide variable template with blanks
• Use physical objects as "variables" (box labeled "score")

Stretch:

• Track multiple players
• Add health and lives variables
• Calculate percentage: accuracy = hits / attempts * 100

🏠 Homework

• Create scoreboard for real game (soccer, Minecraft)
• Try: What happens with negative numbers?

📝 Files

• teacher_notes.md - Full lesson plan
• student_tasks.md - Activities
• week02_scoreboard.py - Starter code

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⬅️ Week 01 | 📖 Main | ➡️ Week 03