Alice Chapter 6 Lab 2

Execution Control with If/Else and Boolean Functions

Name:_________________________________________

Date:_________________________________________

Exercises from Chapter 6, Section 2

For each of the following exercises, create a storyboard on a separate sheet of paper and then translate the storyboard to a program. Include at least one comment in your program.

1. Complete Exercise 6: Modifications to the Zeus World
   
   
   
2. Complete Exercise 11: Spanish Vocabulary
   
   
   
   
   

Extra for Experts

3. Complete Exercise 12: Switch
   
   
   
   
   

Book Project

4. Complete Exercise 2: Binary Code Game
   
   
   
   
   

Concept Questions (Short Answers)

5. What type of expression is used in the condition of an If statement? (Page # _____ )
   
   
   
   
   
   
   
   
6. Evaluate (give the value of) each of the following expressions:
   
   (a)   3 < 5
   
   
   (b)   true = = false
   
   
   (c)   10 >= 10
   
   
   (d)   true and false
   
   
   
   
   
7. Which of the expressions in question 5 (above) is considered a logical expression? Give a reason for your choice. (Page # _____ )
   
   
   
   
   
   
   
   
8. In Alice's drag-and-drop interface, relational operations are listed as part of the World's built-in functions. Give a reason for making relational operations world-level, rather than class-level. (Page # _____ )
   
   
   
   
   
   
   
   
9. What is the purpose of a control structure in a program? (Page # _____ )