What Are Computer Decisions?

🚦 Think of Traffic Lights!

Just like traffic lights help cars decide when to go or stop, we can teach computers to make choices! We give them rules: "IF the light is green, THEN go. IF the light is red, THEN stop." Computers follow these IF-THEN rules to make smart decisions!

Computers can't think like humans, but we can teach them to make choices by giving them conditions to check. If something is true, they do one thing. If it's false, they do something else! 🎯

Decision Trees in Action!

🌡️ Is it cold outside?
👍 YES ↓ 👎 NO ↓
🧥 Wear a jacket!
👕 Wear a t-shirt!
🤖 How Computer Thinks:
IF
temperature < 60 degrees:
    wear_jacket = true
ELSE
:
    wear_jacket = false

Interactive Weather Decision Maker

🌤️ Help the Computer Choose What to Wear!

Click on different weather conditions and see how the computer decides what to recommend!

☀️
Sunny & Warm
🌧️
Rainy
❄️
Snowy & Cold
💨
Windy
Click a weather condition above to see the computer's decision! 👆

Types of Computer Decisions

✅ Simple IF

"IF this is true, THEN do something"

IF it's your birthday:
  sing "Happy Birthday"

🔄 IF-ELSE

"IF this is true, do X. OTHERWISE, do Y"

IF you have homework:
  do homework first
ELSE:
  play games

🎯 IF-ELSE IF

"Check multiple conditions in order"

IF score >= 90:
  grade = "A"
ELSE IF score >= 80:
  grade = "B"
ELSE:
  grade = "C"

🤝 AND & OR

"Check multiple things at once"

IF it's weekend AND sunny:
  go to the park

IF hungry OR thirsty:
  go to kitchen

Try Making Your Own Decision!

🎮 Pet Decision Maker

Help someone choose what pet to get based on their situation!

Do you have a big yard?

How Computers Make Decisions: Step by Step

🔍 The Decision-Making Process

1
Check the Condition: Computer looks at the IF statement and checks if it's true or false
2
Compare Values: It compares numbers, text, or other data using rules like "greater than" or "equal to"
3
Choose Path: If true, it follows one path. If false, it follows the ELSE path
4
Take Action: Computer runs the code in that path - might display text, play sound, or calculate something
5
Continue: After making the decision, computer moves on to the next instruction in the program

Real-World Examples

🌟 Decisions Are Everywhere!

  • 🎮 Video Games: IF player touches enemy, THEN lose a life
  • 📱 Phone Apps: IF password is correct, THEN unlock phone
  • 🏠 Smart Homes: IF it gets dark, THEN turn on lights
  • 🚗 GPS Navigation: IF there's traffic, THEN find another route
  • 🎬 Netflix: IF you liked action movies, THEN suggest more action
  • 🛒 Online Shopping: IF item is in stock, THEN show "Buy Now" button

Your Decision-Making Journey!

Lesson 3 Complete! 🎉