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Robotics Worksheet: Debugging Robot Programs

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

Answer key

  1. bug
  2. 6
  3. run the program
  4. to see what fixed it
  5. line 3
  6. 45
  7. 72
  8. line 3
  9. line 1
  10. 3
  11. left and right mixed up
  12. fix one thing
  13. spot what went wrong
  14. line 3
  15. run the program
  16. test it again
  17. 6
  18. line 1
  19. 60
  20. test it again
  21. 120
  22. 5
  23. 45
  24. line 3
  25. 4
  26. line 1
  27. line 2
  28. line 2
  29. 90
  30. line 2
  31. 8
  32. line 3
  33. 8
  34. 45
  35. 5
  36. line 1
  37. 6
  38. line 1
  39. spot what went wrong
  40. 90

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