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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 99 · 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, 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 left
    3. forward 2
    It stops at (2, 4) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  2. 2.🔢 To debug a robot program, which comes first: “fix one thing” or “run the program”? (a) fix one thing (b) run the program
  3. 3.🔢 To debug a robot program, what comes right after “fix one thing”? (a) run the program (b) find the buggy line (c) spot what went wrong (d) test it again
  4. 4.🐞 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 (6, 7). Its program:
    1. forward 6
    2. turn left
    3. forward 1
    It stops at (4, 7) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  5. 5.🐞 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?
  6. 6.🔢 To debug a robot program, which is the FIRST step? (a) spot what went wrong (b) find the buggy line (c) fix one thing (d) run the program
  7. 7.🐞 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 (4, 6). 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 1 (c) line 3
  8. 8.🐞 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, 5). Its program:
    1. forward 4
    2. turn right
    3. forward 1
    It stops at (5, 4) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  9. 9.🐞 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?
  10. 10.🔢 To debug a robot program, which comes first: “test it again” or “find the buggy line”? (a) test it again (b) find the buggy line
  11. 11.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) left and right mixed up (b) battery is too new (c) the floor is clean (d) wheels are too round
  12. 12.🔢 To debug a robot program, which is the LAST step? (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) test it again (b) find the buggy line (c) fix one thing (d) spot what went wrong
  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 (2, 4). Its program:
    1. forward 4
    2. turn left
    3. forward 2
    It stops at (2, 5) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  15. 15.🐞 A mistake in a program is called a … (a) gear (b) loop (c) sensor (d) bug
  16. 16.🐞 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?
  17. 17.🐞 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 3
    2. turn left
    3. forward 2
    It stops at (3, 5) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  18. 18.🐞 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?
  19. 19.🐞 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 3 (b) line 1 (c) line 2
  20. 20.🐞 Why change only one thing at a time when debugging? (a) to make it slower (b) to save paper (c) to confuse others (d) to see what fixed it
  21. 21.🐞 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?
  22. 22.🐞 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, 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
  23. 23.🐞 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?
  24. 24.🐞 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?
  25. 25.🔢 To debug a robot program, what comes right after “find the buggy line”? (a) test it again (b) spot what went wrong (c) run the program (d) fix one thing
  26. 26.🐞 A robot starts at (4, 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, 7). Its program:
    1. forward 5
    2. turn right
    3. forward 4
    It stops at (8, 7) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  27. 27.🐞 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, 6). Its program:
    1. forward 6
    2. turn left
    3. forward 2
    It stops at (3, 6) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  28. 28.🐞 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, 3). Its program:
    1. forward 2
    2. turn left
    3. forward 2
    It stops at (2, 3) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  29. 29.🔢 To debug a robot program, which comes first: “spot what went wrong” or “fix one thing”? (a) spot what went wrong (b) fix one thing
  30. 30.🐞 This program should draw a regular square (4 equal sides), but the shape does not close:
    repeat 4 { forward 10 cm; turn right 60° }
    What should 60 be changed to?
  31. 31.🐞 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 (5, 6). Its program:
    1. forward 4
    2. turn right
    3. forward 1
    It stops at (5, 5) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  32. 32.🐞 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?
  33. 33.🔢 To debug a robot program, which comes first: “run the program” or “fix one thing”? (a) run the program (b) fix one thing
  34. 34.🔢 To debug a robot program, which comes first: “fix one thing” or “spot what went wrong”? (a) fix one thing (b) spot what went wrong
  35. 35.🐞 This program should draw a regular triangle (3 equal sides), but the shape does not close:
    repeat 3 { forward 10 cm; turn right 45° }
    What should 45 be changed to?
  36. 36.🔢 To debug a robot program, which comes first: “find the buggy line” or “run the program”? (a) run the program (b) find the buggy line
  37. 37.🐞 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, 3). Its program:
    1. forward 2
    2. turn left
    3. forward 3
    It stops at (2, 2) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  38. 38.🐞 This program should draw a regular pentagon (5 equal sides), but it leaves a gap:
    repeat 2 { forward 10 cm; turn right 72° }
    What should the number 2 after “repeat” be?
  39. 39.🐞 A robot starts at (4, 2) facing north (the second number counts squares up, the first counts squares across to the east). It should stop on the star at (1, 5). Its program:
    1. forward 2
    2. turn left
    3. forward 3
    It stops at (1, 4) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  40. 40.🐞 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 (3, 4). Its program:
    1. forward 4
    2. turn right
    3. forward 1
    It stops at (5, 4) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2

Answer key

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

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