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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 313 · 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 it leaves a gap:
    repeat 3 { forward 10 cm; turn right 90° }
    What should the number 3 after “repeat” be?
  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 (3, 3). Its program:
    1. forward 3
    2. turn left
    3. forward 2
    It stops at (2, 3) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  3. 3.🔢 To debug a robot program, which is the LAST step? (a) test it again (b) run the program (c) find the buggy line (d) fix one thing
  4. 4.🔢 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
  5. 5.🐞 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?
  6. 6.🐞 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?
  7. 7.🐞 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?
  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.🔢 To debug a robot program, which comes first: “test it again” or “spot what went wrong”? (a) spot what went wrong (b) test it again
  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 90° }
    What should 90 be changed to?
  11. 11.🐞 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 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
  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 1
    It stops at (6, 4) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  13. 13.🐞 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 right
    3. forward 2
    It stops at (6, 4) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  14. 14.🐞 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?
  15. 15.🐞 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) battery is too new (d) left and right mixed up
  16. 16.🐞 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, 3). Its program:
    1. forward 3
    2. turn right
    3. forward 4
    It stops at (8, 3) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  17. 17.🔢 To debug a robot program, which is the FIRST step? (a) test it again (b) fix one thing (c) spot what went wrong (d) run the program
  18. 18.🔢 To debug a robot program, which comes first: “fix one thing” or “test it again”? (a) test it again (b) fix one thing
  19. 19.🐞 A mistake in a program is called a … (a) loop (b) gear (c) sensor (d) bug
  20. 20.🐞 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 (3, 7). Its program:
    1. forward 7
    2. turn left
    3. forward 2
    It stops at (3, 8) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  21. 21.🐞 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, 2). Its program:
    1. forward 2
    2. turn left
    3. forward 1
    It stops at (4, 2) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  22. 22.🐞 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?
  23. 23.🐞 This program should draw a regular hexagon (6 equal sides), but it leaves a gap:
    repeat 4 { forward 10 cm; turn right 60° }
    What should the number 4 after “repeat” be?
  24. 24.🐞 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, 6). 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
  25. 25.🐞 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?
  26. 26.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) test it again (b) find the buggy line (c) fix one thing (d) run the program
  27. 27.🐞 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, 5). 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 1 (c) line 3
  28. 28.🔢 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
  29. 29.🔢 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
  30. 30.🐞 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, 4). Its program:
    1. forward 4
    2. turn left
    3. forward 1
    It stops at (3, 4) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  31. 31.🐞 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?
  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 90° }
    What should 90 be changed to?
  33. 33.🔢 To debug a robot program, what comes right after “run the program”? (a) find the buggy line (b) fix one thing (c) test it again (d) spot what went wrong
  34. 34.🔢 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
  35. 35.🐞 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, 5). Its program:
    1. forward 4
    2. turn right
    3. forward 2
    It stops at (6, 4) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  36. 36.🐞 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?
  37. 37.🔢 To debug a robot program, what comes right after “find the buggy line”? (a) spot what went wrong (b) fix one thing (c) run the program (d) test it again
  38. 38.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 2 { forward 10 cm; turn right 45° }
    What should the number 2 after “repeat” be?
  39. 39.🐞 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 (8, 4). Its program:
    1. forward 3
    2. turn left
    3. forward 3
    It stops at (2, 4) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  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 (6, 5). 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

Answer key

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

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