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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 34 · 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.🔢 To debug a robot program, which comes first: “run the program” or “spot what went wrong”? (a) spot what went wrong (b) run the program
  2. 2.🐞 Why change only one thing at a time when debugging? (a) to see what fixed it (b) to make it slower (c) to confuse others (d) to save paper
  3. 3.🐞 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?
  4. 4.🐞 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, 8). Its program:
    1. forward 7
    2. turn left
    3. forward 1
    It stops at (3, 9) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  5. 5.🔢 To debug a robot program, which is the LAST step? (a) fix one thing (b) run the program (c) find the buggy line (d) test it again
  6. 6.🐞 A mistake in a program is called a … (a) sensor (b) loop (c) gear (d) bug
  7. 7.🐞 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 4
    2. turn right
    3. forward 2
    It stops at (7, 6) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  8. 8.🐞 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 (2, 3). Its program:
    1. forward 3
    2. turn left
    3. forward 2
    It stops at (3, 3) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  9. 9.🔢 To debug a robot program, which is the FIRST step? (a) run the program (b) fix one thing (c) spot what went wrong (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 (3, 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 1 (b) line 2 (c) line 3
  11. 11.🐞 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?
  12. 12.🐞 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 (2, 6). Its program:
    1. forward 6
    2. turn left
    3. forward 3
    It stops at (1, 6) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  13. 13.🐞 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, 5). Its program:
    1. forward 3
    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
  14. 14.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) run the program (b) find the buggy line (c) fix one thing (d) test it again
  15. 15.🔢 To debug a robot program, what comes right after “run the program”? (a) spot what went wrong (b) find the buggy line (c) test it again (d) fix one thing
  16. 16.🐞 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?
  17. 17.🐞 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, 5). Its program:
    1. forward 2
    2. turn right
    3. forward 1
    It stops at (5, 4) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  18. 18.🐞 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 left
    3. forward 1
    It stops at (3, 8) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  19. 19.🔢 To debug a robot program, what comes right after “fix one thing”? (a) test it again (b) find the buggy line (c) run the program (d) spot what went wrong
  20. 20.🔢 To debug a robot program, which comes first: “fix one thing” or “test it again”? (a) test it again (b) fix one thing
  21. 21.🐞 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?
  22. 22.🐞 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?
  23. 23.🔢 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
  24. 24.🔢 To debug a robot program, which comes first: “run the program” or “test it again”? (a) test it again (b) run the program
  25. 25.🐞 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, 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
  26. 26.🐞 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, 2). Its program:
    1. forward 2
    2. turn right
    3. forward 2
    It stops at (6, 2) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  27. 27.🐞 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
  28. 28.🐞 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?
  29. 29.🐞 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 6
    2. turn right
    3. forward 1
    It stops at (6, 6) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  30. 30.🐞 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?
  31. 31.🐞 This program should draw a regular hexagon (6 equal sides), but it leaves a gap:
    repeat 5 { forward 10 cm; turn right 60° }
    What should the number 5 after “repeat” be?
  32. 32.🔢 To debug a robot program, which comes first: “spot what went wrong” or “run the program”? (a) spot what went wrong (b) run the program
  33. 33.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) wheels are too round (b) battery is too new (c) left and right mixed up (d) the floor is clean
  34. 34.🔢 To debug a robot program, which comes first: “test it again” or “find the buggy line”? (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 (3, 4). Its program:
    1. forward 4
    2. turn right
    3. forward 1
    It stops at (5, 4) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  36. 36.🔢 To debug a robot program, which comes first: “find the buggy line” or “test it again”? (a) find the buggy line (b) test it again
  37. 37.🐞 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?
  38. 38.🐞 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 (1, 6). Its program:
    1. forward 6
    2. turn right
    3. forward 3
    It stops at (7, 6) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  39. 39.🐞 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 (2, 8). Its program:
    1. forward 6
    2. turn right
    3. forward 3
    It stops at (8, 8) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  40. 40.🐞 This program should draw a regular hexagon (6 equal sides), but the shape does not close:
    repeat 6 { forward 10 cm; turn right 72° }
    What should 72 be changed to?

Answer key

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

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