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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 263 · 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) bug (b) sensor (c) loop (d) gear
  2. 2.🔢 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
  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, 7). Its program:
    1. forward 7
    2. turn right
    3. forward 2
    It stops at (7, 8) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  4. 4.🐞 This program should draw a regular square (4 equal sides), but the shape does not close:
    repeat 4 { forward 10 cm; turn right 45° }
    What should 45 be changed to?
  5. 5.🔢 To debug a robot program, which is the LAST step? (a) spot what went wrong (b) find the buggy line (c) test it again (d) fix one thing
  6. 6.🐞 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, 6). Its program:
    1. forward 4
    2. turn left
    3. forward 1
    It stops at (4, 5) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  7. 7.🔢 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
  8. 8.🐞 Why change only one thing at a time when debugging? (a) to make it slower (b) to confuse others (c) to see what fixed it (d) to save paper
  9. 9.🐞 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?
  10. 10.🐞 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?
  11. 11.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) the floor is clean (b) wheels are too round (c) left and right mixed up (d) battery is too new
  12. 12.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 5 { forward 10 cm; turn right 45° }
    What should the number 5 after “repeat” be?
  13. 13.🐞 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?
  14. 14.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) run the program (b) fix one thing (c) find the buggy line (d) test it again
  15. 15.🐞 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?
  16. 16.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 3 { forward 10 cm; turn right 45° }
    What should the number 3 after “repeat” be?
  17. 17.🐞 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?
  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 (6, 2). Its program:
    1. forward 2
    2. turn left
    3. forward 2
    It stops at (2, 2) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  19. 19.🐞 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, 6). 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
  20. 20.🐞 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?
  21. 21.🔢 To debug a robot program, which comes first: “run the program” or “fix one thing”? (a) run the program (b) fix one thing
  22. 22.🐞 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 (3, 4). Its program:
    1. forward 5
    2. turn left
    3. forward 1
    It stops at (3, 5) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  23. 23.🔢 To debug a robot program, what comes right after “fix one thing”? (a) spot what went wrong (b) find the buggy line (c) test it again (d) run the program
  24. 24.🐞 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?
  25. 25.🐞 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?
  26. 26.🔢 To debug a robot program, which comes first: “find the buggy line” or “run the program”? (a) run the program (b) find the buggy line
  27. 27.🐞 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?
  28. 28.🐞 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, 2). Its program:
    1. forward 2
    2. turn left
    3. forward 2
    It stops at (3, 2) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  29. 29.🔢 To debug a robot program, which comes first: “run the program” or “test it again”? (a) test it again (b) run the program
  30. 30.🔢 To debug a robot program, which comes first: “spot what went wrong” or “find the buggy line”? (a) spot what went wrong (b) find the buggy line
  31. 31.🐞 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, 8). Its program:
    1. forward 6
    2. turn right
    3. forward 2
    It stops at (6, 8) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  32. 32.🐞 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, 6). Its program:
    1. forward 7
    2. turn left
    3. forward 1
    It stops at (4, 7) 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 (1, 4). Its program:
    1. forward 2
    2. turn left
    3. forward 4
    It stops at (0, 4) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  34. 34.🐞 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?
  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 (1, 3). Its program:
    1. forward 3
    2. turn left
    3. forward 3
    It stops at (1, 4) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  36. 36.🐞 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, 6). Its program:
    1. forward 4
    2. turn left
    3. forward 2
    It stops at (2, 6) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  37. 37.🐞 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?
  38. 38.🔢 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
  39. 39.🐞 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?
  40. 40.🐞 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?

Answer key

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

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