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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 37 · 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 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, 7). Its program:
    1. forward 5
    2. turn right
    3. forward 1
    It stops at (6, 6) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  2. 2.🐞 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 right
    3. forward 4
    It stops at (8, 3) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  3. 3.🐞 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?
  4. 4.🐞 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 (4, 7). Its program:
    1. forward 6
    2. turn left
    3. forward 1
    It stops at (4, 8) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  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 120° }
    What should 120 be changed to?
  6. 6.🐞 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?
  7. 7.🐞 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?
  8. 8.🐞 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, 4). Its program:
    1. forward 2
    2. turn right
    3. forward 1
    It stops at (6, 3) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  9. 9.🔢 To debug a robot program, which is the LAST step? (a) run the program (b) spot what went wrong (c) find the buggy line (d) test it again
  10. 10.🐞 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 right
    3. forward 3
    It stops at (7, 2) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  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.🔢 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
  13. 13.🐞 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?
  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 45° }
    What should 45 be changed to?
  15. 15.🐞 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, 7). Its program:
    1. forward 6
    2. turn right
    3. forward 2
    It stops at (7, 7) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  16. 16.🐞 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?
  17. 17.🔢 To debug a robot program, what comes right after “fix one thing”? (a) spot what went wrong (b) test it again (c) run the program (d) find the buggy line
  18. 18.🔢 To debug a robot program, which is the FIRST step? (a) find the buggy line (b) fix one thing (c) run the program (d) spot what went wrong
  19. 19.🐞 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?
  20. 20.🐞 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 (3, 5). Its program:
    1. forward 3
    2. turn left
    3. forward 2
    It stops at (2, 5) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  21. 21.🐞 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?
  22. 22.🐞 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?
  23. 23.🐞 A mistake in a program is called a … (a) loop (b) sensor (c) gear (d) bug
  24. 24.🐞 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, 4). Its program:
    1. forward 3
    2. turn left
    3. forward 2
    It stops at (2, 5) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  25. 25.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) the floor is clean (b) battery is too new (c) left and right mixed up (d) wheels are too round
  26. 26.🔢 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
  27. 27.🔢 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
  28. 28.🐞 Why change only one thing at a time when debugging? (a) to make it slower (b) to save paper (c) to confuse others (d) to see what fixed it
  29. 29.🐞 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 (7, 7). Its program:
    1. forward 5
    2. turn left
    3. forward 2
    It stops at (3, 7) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  30. 30.🐞 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, 7). Its program:
    1. forward 5
    2. turn left
    3. forward 2
    It stops at (2, 7) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  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, 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 1 (c) line 2
  32. 32.🔢 To debug a robot program, what comes right after “find the buggy line”? (a) spot what went wrong (b) fix one thing (c) test it again (d) run the program
  33. 33.🔢 To debug a robot program, which comes first: “run the program” or “fix one thing”? (a) fix one thing (b) run the program
  34. 34.🔢 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
  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 (5, 5). Its program:
    1. forward 5
    2. turn right
    3. forward 2
    It stops at (6, 5) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  36. 36.🔢 To debug a robot program, what comes right after “run the program”? (a) spot what went wrong (b) test it again (c) fix one thing (d) find the buggy line
  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 120° }
    What should 120 be changed to?
  38. 38.🔢 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
  39. 39.🐞 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 3
    2. turn right
    3. forward 2
    It stops at (6, 5) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  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 (8, 3). Its program:
    1. forward 3
    2. turn right
    3. forward 4
    It stops at (9, 3) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2

Answer key

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

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