Question: 1

Question

What are the horizontal pathways called in a Karel world?

rows

columns

points

Karel’s position

Question: 2
What are the vertical pathways called in a Karel world?

rows

columns

points

Karel’s position

Question: 3
If Karel starts facing East in the first row, third column, what row and column will Karel be on after this code runs?

move();
move();
move();
turnLeft();
move();

Row 1 and Column 3

Row 4 and Column 4

Row 2 and Column 6

Row 6 and Column 2

Question: 4
If Karel is facing North and the code

turnLeft();
turnLeft();
runs; which direction is Karel facing now?

North

South

East

West

Answer 1

Question 1: What are the horizontal pathways called in a Karel world?
Answer: rows

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Question 2: What are the vertical pathways called in a Karel world?
Answer: columns

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Question 3: If Karel starts facing East in the first row, third column, what row and column will Karel be on after this code runs?

move();
move();
move();
turnLeft();
move();

1. Karel starts at Row 1, Column 3 facing East.
2. After the first move(), Karel goes to Row 1, Column 4.
3. After the second move(), Karel goes to Row 1, Column 5.
4. After the third move(), Karel goes to Row 1, Column 6.
5. Then, turnLeft();: Karel is now facing North.
6. The last move(); takes Karel from Row 1, Column 6 to Row 2, Column 6.

Answer: Row 2 and Column 6

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Question 4: If Karel is facing North and the code

turnLeft();
turnLeft();

runs; which direction is Karel facing now?

1. The first turnLeft(); changes Karel's direction from North to West.
2. The second turnLeft(); changes Karel's direction from West to South.

Answer: South