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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 80 · 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, 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, 5). Its program:
    1. forward 5
    2. turn right
    3. forward 2
    It stops at (7, 5) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  2. 2.🐞 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?
  3. 3.🐞 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?
  4. 4.🐞 A mistake in a program is called a … (a) loop (b) bug (c) gear (d) sensor
  5. 5.🐞 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?
  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 (8, 6). Its program:
    1. forward 5
    2. turn left
    3. forward 3
    It stops at (2, 6) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  7. 7.🐞 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 right
    3. forward 1
    It stops at (5, 4) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  8. 8.🐞 This program should draw a regular pentagon (5 equal sides), but the shape does not close:
    repeat 5 { forward 10 cm; turn right 120° }
    What should 120 be changed to?
  9. 9.🐞 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?
  10. 10.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) run the program (b) test it again (c) find the buggy line (d) fix one thing
  11. 11.🔢 To debug a robot program, what comes right after “run the program”? (a) test it again (b) fix one thing (c) find the buggy line (d) spot what went wrong
  12. 12.🐞 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?
  13. 13.🐞 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?
  14. 14.🐞 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, 3). Its program:
    1. forward 3
    2. turn right
    3. forward 2
    It stops at (6, 3) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  15. 15.🔢 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
  16. 16.🐞 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 2 (b) line 3 (c) line 1
  17. 17.🔢 To debug a robot program, what comes right after “fix one thing”? (a) find the buggy line (b) spot what went wrong (c) test it again (d) run the program
  18. 18.🐞 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, 4). Its program:
    1. forward 2
    2. turn left
    3. forward 2
    It stops at (3, 4) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  19. 19.🐞 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?
  20. 20.🔢 To debug a robot program, which comes first: “run the program” or “find the buggy line”? (a) run the program (b) find the buggy line
  21. 21.🐞 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?
  22. 22.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) battery is too new (b) wheels are too round (c) left and right mixed up (d) the floor is clean
  23. 23.🔢 To debug a robot program, which comes first: “test it again” or “spot what went wrong”? (a) test it again (b) spot what went wrong
  24. 24.🐞 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?
  25. 25.🐞 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, 4). Its program:
    1. forward 2
    2. turn left
    3. forward 1
    It stops at (4, 4) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  26. 26.🐞 Why change only one thing at a time when debugging? (a) to confuse others (b) to save paper (c) to see what fixed it (d) to make it slower
  27. 27.🔢 To debug a robot program, which is the FIRST step? (a) run the program (b) spot what went wrong (c) test it again (d) fix one thing
  28. 28.🐞 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?
  29. 29.🐞 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?
  30. 30.🔢 To debug a robot program, which is the LAST step? (a) find the buggy line (b) test it again (c) run the program (d) fix one thing
  31. 31.🔢 To debug a robot program, what comes right after “find the buggy line”? (a) run the program (b) test it again (c) spot what went wrong (d) fix one thing
  32. 32.🐞 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?
  33. 33.🐞 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?
  34. 34.🐞 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 (7, 4). Its program:
    1. forward 2
    2. turn left
    3. forward 3
    It stops at (1, 4) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  35. 35.🔢 To debug a robot program, which comes first: “find the buggy line” or “fix one thing”? (a) find the buggy line (b) fix one thing
  36. 36.🐞 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, 6). Its program:
    1. forward 5
    2. turn right
    3. forward 2
    It stops at (7, 6) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  37. 37.🐞 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, 4). Its program:
    1. forward 3
    2. turn left
    3. forward 3
    It stops at (2, 5) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  38. 38.🐞 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?
  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 (4, 6). Its program:
    1. forward 4
    2. turn left
    3. forward 2
    It stops at (3, 6) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  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 (8, 5). Its program:
    1. forward 3
    2. turn right
    3. forward 3
    It stops at (8, 4) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3

Answer key

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

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