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Robotics Worksheet: Debugging Robot Programs

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

Answer key

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

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