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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 535 · 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 square (4 equal sides), but the shape does not close:
    repeat 4 { forward 10 cm; turn right 60° }
    What should 60 be changed to?
  2. 2.🐞 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 6
    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
  3. 3.🔢 To debug a robot program, which comes first: “test it again” or “run the program”? (a) test it again (b) run the program
  4. 4.🐞 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, 3). Its program:
    1. forward 3
    2. turn left
    3. forward 1
    It stops at (4, 3) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  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, 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 3 (b) line 1 (c) line 2
  6. 6.🐞 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?
  7. 7.🐞 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?
  8. 8.🐞 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 1 (b) line 2 (c) line 3
  9. 9.🐞 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?
  10. 10.🐞 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?
  11. 11.🐞 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?
  12. 12.🐞 This program should draw a regular square (4 equal sides), but the shape does not close:
    repeat 4 { forward 10 cm; turn right 72° }
    What should 72 be changed to?
  13. 13.🔢 To debug a robot program, what comes right after “run the program”? (a) find the buggy line (b) fix one thing (c) spot what went wrong (d) test it again
  14. 14.🔢 To debug a robot program, what comes right after “find the buggy line”? (a) spot what went wrong (b) run the program (c) fix one thing (d) test it again
  15. 15.🔢 To debug a robot program, which is the FIRST step? (a) spot what went wrong (b) test it again (c) fix one thing (d) run the program
  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.🔢 To debug a robot program, which comes first: “run the program” or “fix one thing”? (a) fix one thing (b) run the program
  18. 18.🐞 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 left
    3. forward 2
    It stops at (3, 4) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  19. 19.🐞 A mistake in a program is called a … (a) loop (b) bug (c) sensor (d) gear
  20. 20.🐞 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?
  21. 21.🔢 To debug a robot program, which comes first: “run the program” or “find the buggy line”? (a) run the program (b) find the buggy line
  22. 22.🔢 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
  23. 23.🔢 To debug a robot program, which comes first: “spot what went wrong” or “run the program”? (a) run the program (b) spot what went wrong
  24. 24.🐞 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?
  25. 25.🐞 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
  26. 26.🔢 To debug a robot program, which comes first: “test it again” or “fix one thing”? (a) fix one thing (b) test it again
  27. 27.🐞 Why change only one thing at a time when debugging? (a) to save paper (b) to confuse others (c) to see what fixed it (d) to make it slower
  28. 28.🔢 To debug a robot program, which comes first: “spot what went wrong” or “find the buggy line”? (a) find the buggy line (b) spot what went wrong
  29. 29.🐞 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, 4). Its program:
    1. forward 2
    2. turn left
    3. forward 1
    It stops at (3, 4) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  30. 30.🐞 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?
  31. 31.🔢 To debug a robot program, what comes right after “fix one thing”? (a) run the program (b) test it again (c) find the buggy line (d) spot what went wrong
  32. 32.🐞 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?
  33. 33.🐞 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?
  34. 34.🐞 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, 7). Its program:
    1. forward 6
    2. turn left
    3. forward 4
    It stops at (1, 7) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  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 (4, 5). Its program:
    1. forward 5
    2. turn right
    3. forward 1
    It stops at (6, 5) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  36. 36.🐞 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, 6). Its program:
    1. forward 6
    2. turn right
    3. forward 2
    It stops at (7, 6) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  37. 37.🐞 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 1 (b) line 2 (c) line 3
  38. 38.🐞 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?
  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, 7). Its program:
    1. forward 5
    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
  40. 40.🐞 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 4
    2. turn left
    3. forward 3
    It stops at (2, 5) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3

Answer key

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

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