EOU Assessment: 1.3 Pattern Recognition and Sub-routines in Flowcharts

Section A: Fill in the Blanks

Instructions: Read each statement carefully. Select the most appropriate term from the Word Bank to complete each blank.

Word Bank: Call • Efficient • Identifier • Pattern Recognition • Return • Sub-routine

1. The computational thinking process of identifying repeated designs, recurring sequences, or common processes in a task is called .

2. A self-contained, named algorithm that can be executed multiple times within a program or across different programs is known as a .

3. The unique, meaningful name given to a sub-routine (such as `addNumbers()`) is called its .

4. When a main algorithm triggers a sub-routine, it is said to the sub-routine, temporarily pausing the main algorithm.

5. When a sub-routine finishes executing its instructions at the STOP box, it will to the exact place after where it was triggered in the main code.

6. Using sub-routines makes a computer program more because it avoids code duplication, saves memory, and allows faster execution.

Section B: Multiple Choice Questions

Instructions: Choose the single best option (A, B, C, or D) for each question.

7. Which geometric shape is the official standard flowchart symbol for declaring and calling a sub-routine?

(A) An oval / rounded rectangle with a single solid border

(B) A diamond with conditional YES and NO exit arrows

(C) A parallelogram with slanted side edges

(D) A rectangle with vertical lines drawn inside on the left and right edges (Predefined Process)

8. Why are empty parentheses `()` attached to the end of a sub-routine identifier (such as `calculateTotal()`)?

(A) To show that the sub-routine contains an unfixable syntax error

(B) To clearly identify that the name refers to a callable sub-routine/function rather than a regular variable

(C) To tell the computer to delete all variables stored in memory

(D) To force the flowchart to stop running permanently

9. In a multi-level video game like Pac-Man, which element represents a recurring pattern that can be packaged into a sub-routine?

(A) The final ending credits displayed when a player uninstalls the game

(B) The unique serial number printed on the plastic arcade cabinet

(C) The ghost reset behavior and score calculation algorithm that runs every time a life is lost

(D) The electric wall plug powering the arcade machine

10. Consider the sub-routine `Dance()`: [Stand up → Turn around once → Wave hands twice → Turn around once → Sit down]. If an algorithm runs: `START → Dance() → Dance() → Dance() → STOP`, how many total times does the person turn around?

(A) 3 times

(B) 6 times (2 turns per sub-routine × 3 calls)

(C) 9 times

(D) 12 times

11. A sub-routine named `calculate()` takes three inputs: `first = 2`, `second = 3`, `third = 4`. The process inside calculates `result = first * second * third`. What does the sub-routine output?

(A) 9

(B) 14

(C) 24

(D) 234

12. Look at Sofia's flowchart where `main()` calls `findLargest()`. Inside `findLargest()`, the decision is `Is number1 > number2?`. If the user inputs `number1 = 15` and `number2 = 20`, which sub-routine will be executed next?

(A) `firstLarge()` because 15 is the first number input

(B) `firstSmall()` because the condition 15 > 20 evaluates to NO

(C) The program terminates immediately with an error

(D) `addNumbers()` because 15 and 20 are added together

13. Why is song lyrics printing '[Repeat Chorus]' considered an excellent real-world analogy for a programming sub-routine?

(A) Because the chorus is a self-contained, repeated set of words called multiple times between unique verses without reprinting the text

(B) Because songs cannot be played on computers without sub-routines

(C) Because the chorus changes into different instruments every second

(D) Because song lyrics do not follow any structured patterns

14. A programmer creates a flowchart where sub-routine `subA()` attempts to use a variable called `userScore`, but `userScore` was created inside a completely separate sub-routine `subB()` without being passed. What common error occurs?

(A) The computer monitor screen physically turns off

(B) A variable scope / data access error where the sub-routine cannot find or read the required data

(C) The sub-routine automatically converts the variable into a string

(D) The flowchart automatically renames the variable to `total`

Section C: One-Word Answers

Instructions: Write the exact single technical term that accurately answers each prompt.

15. What is the term for a repeated design, sequence, or recurring process in data or algorithms?

16. What is the term for the unique, meaningful name assigned to a sub-routine?

17. What action occurs when a sub-routine finishes its tasks and control jumps back to the calling flowchart?

18. What specific term describes a programming structure where one sub-routine calls another sub-routine?

Section D: Match the Following

Instructions: Drag the correct description or example from the pool on the right into the corresponding item on the left.

19. Predefined Process Symbol

Drop description here

20. Song Chorus Analogy

Drop description here

21. Sub-routine `calculate()`

Drop description here

22. Operator Error

Drop description here

23. Nested Sub-routine

Drop description here

Descriptions Bank

A. A sub-routine that takes values, executes a calculation, and displays the product.

B. A rectangle with vertical lines on the inner side edges.

C. A real-world example of calling a repeated sequence multiple times without rewriting.

D. Using '>' instead of '<' in a decision diamond, causing the wrong branch to execute.

E. `main()` calls `findLargest()`, which then calls `firstLarge()`.

Section E: Arrange in Proper Sequence

Instructions: Order the following steps logically from first (1) to last (4).

24. Arrange the chronological execution flow when an algorithm calls a sub-routine (1 to 4):

The sub-routine executes its instructions step-by-step from its start block.

The main flowchart begins at START and executes instructions sequentially until a sub-routine call symbol is reached.

The main algorithm pauses and control jumps directly to the sub-routine.

Upon reaching STOP/RETURN, control returns to the exact stage in the main flowchart immediately following the call.

25. Arrange the 4-step iterative cycle used to find and correct errors in a flowchart that contains sub-routines (1 to 4):

Modify the specific part of the flowchart that caused the flaw.

Test the flowchart with sample data to compare actual output against expected output.

Repeat the test-modify-retest cycle until all errors are eliminated.

Retest the flowchart with the same sample data to verify if the fix works.

Section F: True or False

Instructions: State whether each statement is TRUE or FALSE. For every FALSE statement, write a 1-sentence correction in the space provided.

26. A sub-routine can only be called once in an entire computer program.

True False

27. When naming a sub-routine, it is good programming practice to choose a meaningful identifier like `calculateTax()` rather than an unrelated name like `storyTime()`.

True False

28. In a flowchart, the sub-routine call symbol has multiple arrows entering it from all directions.

True False

29. A sub-routine is capable of calling another sub-routine during its execution.

True False

30. Testing a sub-routine once guarantees that an entirely different sub-routine will never contain logical bugs.

True False

31. When a sub-routine finishes running at STOP, the entire computer program terminates completely and closes.

True False

Section G: List Any Three / List Any Two

32. List ANY THREE reasons why pattern recognition and sub-routines make algorithms and computer programs more efficient.

33. List ANY TWO common errors that programmers make when creating or calling sub-routines in flowcharts.

Student Details

Section A: Fill in the Blanks

Section B: Multiple Choice Questions

Section C: One-Word Answers

Section D: Match the Following

Descriptions Bank

Section E: Arrange in Proper Sequence

Section F: True or False

Section G: List Any Three / List Any Two