Scratch If Then statement examples for beginners

📚 Quick Study Guide

• 🐱‍💻 What is an 'If-Then' statement? An 'If-Then' statement in Scratch (and programming in general) is a conditional statement. It checks if a certain condition is true, and if it is, then it executes a specific block of code.
• 🚦 Syntax: In Scratch, the 'If-Then' block is found in the 'Control' category. It essentially reads as: IF (condition) THEN (do something).
• ✨ Common Conditions: Conditions can involve comparing numbers (e.g., score > 10), checking if a sprite is touching another sprite (e.g., touching 'mouse-pointer'?), or checking if a variable has a specific value (e.g., lives = 0).
• 🧩 Example: If the score is greater than 50, then say 'You Win!'.
• 🎭 'If-Then-Else' Block: Scratch also provides an 'If-Then-Else' block. This allows you to execute one block of code if the condition is true and a *different* block of code if the condition is false.
• 💡 Nested 'If-Then' Statements: You can put 'If-Then' statements inside other 'If-Then' statements to create more complex logic.

Practice Quiz

1. What category in Scratch contains the 'If-Then' block?
   1. A. Motion
   2. B. Looks
   3. C. Control
   4. D. Sensing
2. What does an 'If-Then' statement do?
   1. A. Repeats a block of code forever.
   2. B. Executes a block of code only if a condition is true.
   3. C. Changes the color of a sprite.
   4. D. Moves a sprite randomly.
3. Which of the following is a valid condition for an 'If-Then' statement?
   1. A. touching color red?
   2. B. score + 5
   3. C. move 10 steps
   4. D. say hello
4. What happens if the condition in an 'If-Then' statement is false?
   1. A. The code inside the 'Then' block is executed.
   2. B. The program stops.
   3. C. Nothing happens.
   4. D. The sprite disappears.
5. What is the purpose of the 'If-Then-Else' block?
   1. A. To repeat a block of code a specific number of times.
   2. B. To execute one block of code if a condition is true and another if it's false.
   3. C. To change the volume of the sound.
   4. D. To create a new sprite.
6. Which of the following is an example of a nested 'If-Then' statement?
   1. A. An 'If-Then' statement inside another 'If-Then' statement.
   2. B. Two 'If-Then' statements side by side.
   3. C. An 'If-Then' statement with no condition.
   4. D. An 'If-Then' statement with no code inside the 'Then' block.
7. If the variable 'lives' is equal to 0, and you use the condition 'lives > 0' in an 'If-Then' statement, will the code inside the 'Then' block be executed?
   1. A. Yes
   2. B. No
   3. C. Maybe
   4. D. It depends on the sprite's color.