🇨🇳 中文
中文

Lesson 6.1: True or False Detective Agency

Welcome, detectives! Your first case awaits. Today, our agency will learn the most important detective skill: telling the difference between what’s TRUE and what’s FALSE. This is the key to solving any mystery and the secret behind how computers make decisions.

What You’ll Learn

By the end of your first case, you’ll be able to:

  • Look at a clue (a statement) and determine if it’s true or false.
  • Use logic and reasoning to solve simple mysteries.
  • Understand that computers think in a simple “true/false” way called Boolean logic.
  • Program a sprite to make a decision based on a true/false condition.

Your Detective Mission

Basic Training: The True/False Game (12 minutes)

  • Let’s warm up our brains with a game of “True or False,” using silly statements about our classroom.
  • We’ll introduce the official term: Boolean logic. It’s just a cool way of saying that computers see everything as either true or false.
  • Let’s get moving! We’ll make one side of the room the “True Zone” and the other the “False Zone,” and you’ll move to the side you think is correct.

Case File #1: The Logic Puzzles (18 minutes)

  • Time for your first assignment. You’ll work in detective teams to solve a series of logic puzzles.
  • Your only tools are the clues you’re given. You’ll need to figure out which clues are true to eliminate suspects and find the solution.
  • This is all about systematic thinking! We’ll celebrate how different teams crack the case.

Programming Your First Decision (15 minutes)

  • Now, let’s teach our sprites to be detectives!
  • We’ll create simple programs that make a decision. For example: “If the sprite is tapped, then it will say ‘You found a clue!’”
  • You’ll get to experiment with different “true/false” conditions to see how you can make your sprite react.

Debriefing the Case (5 minutes)

  • Let’s share our winning strategies. How did you solve the puzzles?
  • We’ll discuss how breaking down a big mystery into small true/false questions makes it easier to solve.

Your Detective Toolkit

  • A “True Zone” and a “False Zone” marked in our classroom
  • Top-secret logic puzzle case files
  • Your device with Scratch Jr.
  • Official detective badges or hats to get us in the zone!

How to Be a Top Detective

  • We’ll see how quickly and accurately you can sort statements into “true” or “false.”
  • Case Closed?: How did your team use logic to solve the puzzles?
  • Your ability to program a simple “if… then…” decision in Scratch Jr. will show you’ve mastered the basic logic.

New Tech Words to Master

  • Boolean Logic: A fancy way of saying “true or false” logic, which is how computers make all their decisions.
  • Condition: Something that the computer checks to see if it is true or false.
  • Reasoning: Using facts and clues to think through a problem.
  • Evidence: The clues you use to prove that something is true or false.