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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 177 · 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) gear (b) sensor (c) bug (d) loop
  2. 2.🐞 Why change only one thing at a time when debugging? (a) to make it slower (b) to save paper (c) to see what fixed it (d) to confuse others
  3. 3.🐞 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?
  4. 4.🔢 To debug a robot program, which is the FIRST step? (a) run the program (b) test it again (c) find the buggy line (d) spot what went wrong
  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 60° }
    What should 60 be changed to?
  6. 6.🐞 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 (6, 4). Its program:
    1. forward 4
    2. turn right
    3. forward 2
    It stops at (6, 5) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  7. 7.🐞 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?
  8. 8.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 7 { forward 10 cm; turn right 45° }
    What should the number 7 after “repeat” be?
  9. 9.🐞 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?
  10. 10.🔢 To debug a robot program, what comes right after “fix one thing”? (a) run the program (b) find the buggy line (c) test it again (d) spot what went wrong
  11. 11.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) test it again (b) fix one thing (c) run the program (d) find the buggy line
  12. 12.🔢 To debug a robot program, what comes right after “run the program”? (a) fix one thing (b) find the buggy line (c) test it again (d) spot what went wrong
  13. 13.🐞 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?
  14. 14.🔢 To debug a robot program, which is the LAST step? (a) spot what went wrong (b) test it again (c) fix one thing (d) run the program
  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 (4, 3). Its program:
    1. forward 3
    2. turn right
    3. forward 1
    It stops at (6, 3) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  16. 16.🐞 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?
  17. 17.🐞 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?
  18. 18.🐞 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?
  19. 19.🐞 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?
  20. 20.🔢 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
  21. 21.🐞 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 (6, 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 2 (c) line 1
  22. 22.🐞 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?
  23. 23.🔢 To debug a robot program, which comes first: “run the program” or “spot what went wrong”? (a) run the program (b) spot what went wrong
  24. 24.🐞 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?
  25. 25.🐞 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?
  26. 26.🐞 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, 6). Its program:
    1. forward 5
    2. turn right
    3. forward 1
    It stops at (5, 6) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  27. 27.🐞 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 left
    3. forward 2
    It stops at (3, 4) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  28. 28.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) left and right mixed up (b) the floor is clean (c) battery is too new (d) wheels are too round
  29. 29.🔢 To debug a robot program, which comes first: “fix one thing” or “run the program”? (a) fix one thing (b) run the program
  30. 30.🔢 To debug a robot program, which comes first: “run the program” or “fix one thing”? (a) run the program (b) fix one thing
  31. 31.🔢 To debug a robot program, which comes first: “fix one thing” or “test it again”? (a) test it again (b) fix one thing
  32. 32.🐞 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 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 (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
  34. 34.🐞 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?
  35. 35.🐞 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 (6, 7). Its program:
    1. forward 5
    2. turn right
    3. forward 2
    It stops at (7, 7) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  36. 36.🔢 To debug a robot program, which comes first: “run the program” or “test it again”? (a) test it again (b) run the program
  37. 37.🐞 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?
  38. 38.🐞 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?
  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 (7, 4). Its program:
    1. forward 3
    2. turn right
    3. forward 4
    It stops at (8, 4) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  40. 40.🔢 To debug a robot program, which comes first: “test it again” or “fix one thing”? (a) fix one thing (b) test it again

Answer key

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

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