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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 111 · 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) loop (b) sensor (c) gear (d) bug
  2. 2.🐞 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, 4). Its program:
    1. forward 3
    2. turn right
    3. forward 2
    It stops at (6, 4) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  3. 3.🐞 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, 3). Its program:
    1. forward 2
    2. turn left
    3. forward 1
    It stops at (3, 3) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  4. 4.🐞 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 2 (b) line 3 (c) line 1
  5. 5.🔢 To debug a robot program, what comes right after “find the buggy line”? (a) test it again (b) run the program (c) spot what went wrong (d) fix one thing
  6. 6.🔢 To debug a robot program, which is the FIRST step? (a) run the program (b) test it again (c) spot what went wrong (d) find the buggy line
  7. 7.🐞 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?
  8. 8.🔢 To debug a robot program, which comes first: “fix one thing” or “run the program”? (a) run the program (b) fix one thing
  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 45° }
    What should 45 be changed to?
  10. 10.🔢 To debug a robot program, what comes right after “run the program”? (a) spot what went wrong (b) find the buggy line (c) test it again (d) fix one thing
  11. 11.🐞 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
  12. 12.🐞 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 4
    2. turn right
    3. forward 1
    It stops at (5, 6) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  13. 13.🔢 To debug a robot program, which comes first: “find the buggy line” or “spot what went wrong”? (a) spot what went wrong (b) find the buggy line
  14. 14.🐞 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, 6). Its program:
    1. forward 4
    2. turn left
    3. forward 3
    It stops at (1, 6) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  15. 15.🔢 To debug a robot program, which is the LAST step? (a) find the buggy line (b) fix one thing (c) test it again (d) spot what went wrong
  16. 16.🐞 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?
  17. 17.🐞 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?
  18. 18.🐞 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?
  19. 19.🔢 To debug a robot program, what comes right after “fix one thing”? (a) find the buggy line (b) run the program (c) spot what went wrong (d) test it again
  20. 20.🐞 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 (7, 6). Its program:
    1. forward 6
    2. turn right
    3. forward 2
    It stops at (6, 6) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  21. 21.🐞 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 (6, 8). 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
  22. 22.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) battery is too new (b) left and right mixed up (c) the floor is clean (d) wheels are too round
  23. 23.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) find the buggy line (b) run the program (c) test it again (d) fix one thing
  24. 24.🐞 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, 3). Its program:
    1. forward 3
    2. turn right
    3. forward 2
    It stops at (6, 3) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  25. 25.🐞 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, 5). Its program:
    1. forward 4
    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
  26. 26.🐞 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?
  27. 27.🐞 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 (2, 4). Its program:
    1. forward 3
    2. turn left
    3. forward 4
    It stops at (1, 4) 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, 5). 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
  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 72° }
    What should 72 be changed to?
  30. 30.🐞 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 (4, 5). Its program:
    1. forward 3
    2. turn left
    3. forward 1
    It stops at (4, 4) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  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 60° }
    What should 60 be changed to?
  32. 32.🐞 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?
  33. 33.🐞 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?
  34. 34.🐞 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 1
    It stops at (4, 6) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  35. 35.🔢 To debug a robot program, which comes first: “fix one thing” or “find the buggy line”? (a) fix one thing (b) find the buggy line
  36. 36.🐞 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?
  37. 37.🐞 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?
  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 (6, 7). Its program:
    1. forward 7
    2. turn right
    3. forward 1
    It stops at (6, 8) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  39. 39.🐞 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?
  40. 40.🐞 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?

Answer key

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

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