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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 12 · 40 questions
TalentJR

Robot tip (Compare and fix one thing): Run it, spot what went wrong, find the buggy line, fix one thing, test again. Wrong side → a turn is the wrong way. Too far or too short → a forward number is wrong. A shape that does not close → the turn should be 360 ÷ sides; a gap → the repeat number should equal the sides.

NameDateTime takenScore ___ / 40
  1. 1.🐞 A robot starts at (4, 1) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (3, 7). Its program:
    1. forward 6
    2. turn right
    3. forward 1
    It stops at (5, 7) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  2. 2.🔢 To debug a robot program, which is the LAST step? (a) find the buggy line (b) run the program (c) fix one thing (d) test it again
  3. 3.🐞 A robot starts at (5, 2) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (3, 4). Its program:
    1. forward 2
    2. turn left
    3. forward 1
    It stops at (4, 4) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  4. 4.🐞 A mistake in a program is called a … (a) sensor (b) gear (c) loop (d) bug
  5. 5.🐞 This program should draw a regular square (4 equal sides), but the shape does not close:
    repeat 4 { forward 10 cm; turn right 72° }
    What should 72 be changed to?
  6. 6.🐞 A robot starts at (5, 1) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (8, 5). Its program:
    1. forward 3
    2. turn right
    3. forward 3
    It stops at (8, 4) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  7. 7.🔢 To debug a robot program, which is the FIRST step? (a) find the buggy line (b) spot what went wrong (c) run the program (d) test it again
  8. 8.🐞 A robot starts at (5, 1) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (7, 3). Its program:
    1. forward 3
    2. turn right
    3. forward 2
    It stops at (7, 4) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  9. 9.🐞 This program should draw a regular hexagon (6 equal sides), but it leaves a gap:
    repeat 5 { forward 10 cm; turn right 60° }
    What should the number 5 after “repeat” be?
  10. 10.🔢 To debug a robot program, which comes first: “run the program” or “fix one thing”? (a) run the program (b) fix one thing
  11. 11.🐞 A robot starts at (5, 2) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (6, 7). Its program:
    1. forward 4
    2. turn right
    3. forward 1
    It stops at (6, 6) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  12. 12.🐞 This program should draw a regular pentagon (5 equal sides), but the shape does not close:
    repeat 5 { forward 10 cm; turn right 120° }
    What should 120 be changed to?
  13. 13.🐞 Why change only one thing at a time when debugging? (a) to see what fixed it (b) to confuse others (c) to make it slower (d) to save paper
  14. 14.🐞 This program should draw a regular pentagon (5 equal sides), but it leaves a gap:
    repeat 4 { forward 10 cm; turn right 72° }
    What should the number 4 after “repeat” be?
  15. 15.🐞 This program should draw a regular pentagon (5 equal sides), but the shape does not close:
    repeat 5 { forward 10 cm; turn right 60° }
    What should 60 be changed to?
  16. 16.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 3 { forward 10 cm; turn right 45° }
    What should the number 3 after “repeat” be?
  17. 17.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) wheels are too round (b) the floor is clean (c) battery is too new (d) left and right mixed up
  18. 18.🐞 A robot starts at (4, 1) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (2, 5). Its program:
    1. forward 4
    2. turn right
    3. forward 2
    It stops at (6, 5) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  19. 19.🐞 This program should draw a regular square (4 equal sides), but it leaves a gap:
    repeat 2 { forward 10 cm; turn right 90° }
    What should the number 2 after “repeat” be?
  20. 20.🐞 This program should draw a regular square (4 equal sides), but it leaves a gap:
    repeat 3 { forward 10 cm; turn right 90° }
    What should the number 3 after “repeat” be?
  21. 21.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) fix one thing (b) find the buggy line (c) run the program (d) test it again
  22. 22.🐞 A robot starts at (5, 2) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (7, 8). Its program:
    1. forward 6
    2. turn left
    3. forward 2
    It stops at (3, 8) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  23. 23.🐞 A robot starts at (5, 0) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (7, 4). Its program:
    1. forward 5
    2. turn right
    3. forward 2
    It stops at (7, 5) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  24. 24.🔢 To debug a robot program, which comes first: “run the program” or “spot what went wrong”? (a) spot what went wrong (b) run the program
  25. 25.🐞 A robot starts at (5, 0) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (2, 2). Its program:
    1. forward 3
    2. turn left
    3. forward 3
    It stops at (2, 3) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  26. 26.🔢 To debug a robot program, what comes right after “fix one thing”? (a) run the program (b) spot what went wrong (c) test it again (d) find the buggy line
  27. 27.🔢 To debug a robot program, which comes first: “spot what went wrong” or “test it again”? (a) spot what went wrong (b) test it again
  28. 28.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 5 { forward 10 cm; turn right 45° }
    What should the number 5 after “repeat” be?
  29. 29.🐞 This program should draw a regular triangle (3 equal sides), but the shape does not close:
    repeat 3 { forward 10 cm; turn right 90° }
    What should 90 be changed to?
  30. 30.🐞 A robot starts at (5, 0) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (6, 5). Its program:
    1. forward 6
    2. turn right
    3. forward 1
    It stops at (6, 6) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  31. 31.🐞 This program should draw a regular square (4 equal sides), but the shape does not close:
    repeat 4 { forward 10 cm; turn right 120° }
    What should 120 be changed to?
  32. 32.🐞 A robot starts at (4, 0) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (1, 2). Its program:
    1. forward 2
    2. turn left
    3. forward 2
    It stops at (2, 2) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  33. 33.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 2 { forward 10 cm; turn right 45° }
    What should the number 2 after “repeat” be?
  34. 34.🐞 This program should draw a regular triangle (3 equal sides), but it leaves a gap:
    repeat 2 { forward 10 cm; turn right 120° }
    What should the number 2 after “repeat” be?
  35. 35.🐞 A robot starts at (4, 0) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (5, 4). Its program:
    1. forward 3
    2. turn right
    3. forward 1
    It stops at (5, 3) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  36. 36.🐞 This program should draw a regular hexagon (6 equal sides), but the shape does not close:
    repeat 6 { forward 10 cm; turn right 72° }
    What should 72 be changed to?
  37. 37.🐞 This program should draw a regular pentagon (5 equal sides), but the shape does not close:
    repeat 5 { forward 10 cm; turn right 45° }
    What should 45 be changed to?
  38. 38.🔢 To debug a robot program, what comes right after “run the program”? (a) find the buggy line (b) fix one thing (c) spot what went wrong (d) test it again
  39. 39.🐞 A robot starts at (5, 0) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (4, 5). Its program:
    1. forward 5
    2. turn left
    3. forward 2
    It stops at (3, 5) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  40. 40.🐞 This program should draw a regular hexagon (6 equal sides), but the shape does not close:
    repeat 6 { forward 10 cm; turn right 90° }
    What should 90 be changed to?

Answer key

  1. line 2
  2. test it again
  3. line 3
  4. bug
  5. 90
  6. line 1
  7. run the program
  8. line 1
  9. 6
  10. run the program
  11. line 1
  12. 72
  13. to see what fixed it
  14. 5
  15. 72
  16. 8
  17. left and right mixed up
  18. line 2
  19. 4
  20. 4
  21. find the buggy line
  22. line 2
  23. line 1
  24. run the program
  25. line 1
  26. test it again
  27. spot what went wrong
  28. 8
  29. 120
  30. line 1
  31. 90
  32. line 3
  33. 8
  34. 3
  35. line 1
  36. 60
  37. 72
  38. spot what went wrong
  39. line 3
  40. 60

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