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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 268 · 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.

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

Answer key

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

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