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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 23 · 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 (4, 3). 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 1 (c) line 2
  2. 2.🐞 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 5
    2. turn left
    3. forward 1
    It stops at (4, 7) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  3. 3.🐞 Why change only one thing at a time when debugging? (a) to make it slower (b) to see what fixed it (c) to save paper (d) to confuse others
  4. 4.🐞 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?
  5. 5.🔢 To debug a robot program, what comes right after “run the program”? (a) find the buggy line (b) spot what went wrong (c) test it again (d) fix one thing
  6. 6.🔢 To debug a robot program, which comes first: “spot what went wrong” or “fix one thing”? (a) spot what went wrong (b) fix one thing
  7. 7.🐞 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?
  8. 8.🔢 To debug a robot program, which is the FIRST step? (a) test it again (b) find the buggy line (c) fix one thing (d) run the program
  9. 9.🐞 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) left and right mixed up (d) battery is too new
  10. 10.🐞 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?
  11. 11.🔢 To debug a robot program, which is the LAST step? (a) fix one thing (b) find the buggy line (c) test it again (d) run the program
  12. 12.🐞 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?
  13. 13.🔢 To debug a robot program, which comes first: “run the program” or “test it again”? (a) run the program (b) test it again
  14. 14.🐞 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?
  15. 15.🐞 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, 5). Its program:
    1. forward 2
    2. turn right
    3. forward 1
    It stops at (6, 4) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  16. 16.🐞 This program should draw a regular octagon (8 equal sides), but the shape does not close:
    repeat 8 { forward 10 cm; turn right 72° }
    What should 72 be changed to?
  17. 17.🐞 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?
  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 (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 2 (b) line 3 (c) line 1
  19. 19.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) fix one thing (b) find the buggy line (c) test it again (d) run the program
  20. 20.🐞 A mistake in a program is called a … (a) bug (b) sensor (c) loop (d) gear
  21. 21.🐞 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?
  22. 22.🔢 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
  23. 23.🔢 To debug a robot program, which comes first: “run the program” or “fix one thing”? (a) run the program (b) fix one thing
  24. 24.🔢 To debug a robot program, which comes first: “fix one thing” or “spot what went wrong”? (a) fix one thing (b) spot what went wrong
  25. 25.🐞 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?
  26. 26.🐞 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?
  27. 27.🐞 This program should draw a regular triangle (3 equal sides), but the shape does not close:
    repeat 3 { forward 10 cm; turn right 60° }
    What should 60 be changed to?
  28. 28.🐞 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?
  29. 29.🐞 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 3
    2. turn right
    3. forward 1
    It stops at (6, 4) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  30. 30.🐞 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?
  31. 31.🐞 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?
  32. 32.🐞 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?
  33. 33.🐞 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?
  34. 34.🐞 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, 6). Its program:
    1. forward 4
    2. turn left
    3. forward 2
    It stops at (3, 5) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  35. 35.🐞 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?
  36. 36.🔢 To debug a robot program, what comes right after “fix one thing”? (a) spot what went wrong (b) run the program (c) find the buggy line (d) test it again
  37. 37.🐞 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, 2). Its program:
    1. forward 2
    2. turn left
    3. forward 2
    It stops at (3, 2) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  38. 38.🔢 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
  39. 39.🐞 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, 5). Its program:
    1. forward 5
    2. turn left
    3. forward 2
    It stops at (3, 5) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  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 120° }
    What should 120 be changed to?

Answer key

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

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