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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 54 · 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.🐞 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?
  2. 2.🔢 To debug a robot program, which comes first: “find the buggy line” or “fix one thing”? (a) fix one thing (b) find the buggy line
  3. 3.🔢 To debug a robot program, which is the FIRST step? (a) spot what went wrong (b) test it again (c) run the program (d) find the buggy line
  4. 4.🔢 To debug a robot program, which is the LAST step? (a) spot what went wrong (b) test it again (c) run the program (d) fix one thing
  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 (8, 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 1 (c) line 2
  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.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) fix one thing (b) find the buggy line (c) test it again (d) run the program
  8. 8.🐞 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?
  9. 9.🐞 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, 8). Its program:
    1. forward 7
    2. turn left
    3. forward 2
    It stops at (2, 9) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  10. 10.🐞 Why change only one thing at a time when debugging? (a) to make it slower (b) to confuse others (c) to save paper (d) to see what fixed it
  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 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, 4). Its program:
    1. forward 4
    2. turn right
    3. forward 3
    It stops at (8, 4) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  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 (7, 3). Its program:
    1. forward 2
    2. turn left
    3. forward 3
    It stops at (1, 3) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  14. 14.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 4 { forward 10 cm; turn right 45° }
    What should the number 4 after “repeat” be?
  15. 15.🐞 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 3 (c) line 1
  16. 16.🔢 To debug a robot program, which comes first: “find the buggy line” or “test it again”? (a) test it again (b) find the buggy line
  17. 17.🐞 A mistake in a program is called a … (a) loop (b) bug (c) gear (d) sensor
  18. 18.🐞 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?
  19. 19.🔢 To debug a robot program, which comes first: “spot what went wrong” or “test it again”? (a) test it again (b) spot what went wrong
  20. 20.🐞 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?
  21. 21.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) battery is too new (b) wheels are too round (c) the floor is clean (d) left and right mixed up
  22. 22.🐞 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?
  23. 23.🐞 This program should draw a regular hexagon (6 equal sides), but it leaves a gap:
    repeat 3 { forward 10 cm; turn right 60° }
    What should the number 3 after “repeat” be?
  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, 5). Its program:
    1. forward 6
    2. turn left
    3. forward 2
    It stops at (2, 6) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  25. 25.🔢 To debug a robot program, what comes right after “fix one thing”? (a) run the program (b) spot what went wrong (c) find the buggy line (d) test it again
  26. 26.🔢 To debug a robot program, which comes first: “fix one thing” or “run the program”? (a) run the program (b) fix one thing
  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 (7, 4). Its program:
    1. forward 3
    2. turn right
    3. forward 1
    It stops at (6, 4) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  28. 28.🐞 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?
  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.🔢 To debug a robot program, which comes first: “test it again” or “run the program”? (a) run the program (b) test it again
  31. 31.🔢 To debug a robot program, what comes right after “find the buggy line”? (a) run the program (b) spot what went wrong (c) test it again (d) fix one thing
  32. 32.🐞 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?
  33. 33.🔢 To debug a robot program, which comes first: “spot what went wrong” or “fix one thing”? (a) fix one thing (b) spot what went wrong
  34. 34.🔢 To debug a robot program, which comes first: “run the program” or “find the buggy line”? (a) find the buggy line (b) run the program
  35. 35.🐞 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, 2). Its program:
    1. forward 2
    2. turn right
    3. forward 1
    It stops at (6, 2) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  36. 36.🐞 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 right
    3. forward 1
    It stops at (5, 5) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  37. 37.🐞 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?
  38. 38.🐞 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, 4). Its program:
    1. forward 2
    2. turn left
    3. forward 2
    It stops at (2, 4) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  39. 39.🐞 This program should draw a regular pentagon (5 equal sides), but the shape does not close:
    repeat 5 { forward 10 cm; turn right 60° }
    What should 60 be changed to?
  40. 40.🐞 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, 4). Its program:
    1. forward 4
    2. turn right
    3. forward 1
    It stops at (6, 4) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1

Answer key

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

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