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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 115 · 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 (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 (1, 4). Its program:
    1. forward 3
    2. turn right
    3. forward 3
    It stops at (7, 4) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  2. 2.🐞 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?
  3. 3.🐞 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
  4. 4.🐞 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?
  5. 5.🐞 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, 6). Its program:
    1. forward 6
    2. turn right
    3. forward 2
    It stops at (6, 6) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  6. 6.🐞 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?
  7. 7.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) battery is too new (b) the floor is clean (c) wheels are too round (d) left and right mixed up
  8. 8.🐞 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 2 (b) line 1 (c) line 3
  9. 9.🐞 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?
  10. 10.🐞 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, 5). Its program:
    1. forward 3
    2. turn right
    3. forward 3
    It stops at (7, 4) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  11. 11.🐞 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?
  12. 12.🔢 To debug a robot program, what comes right after “fix one thing”? (a) spot what went wrong (b) find the buggy line (c) run the program (d) test it again
  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) test it again (b) find the buggy line (c) run the program (d) spot what went wrong
  15. 15.🐞 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?
  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 45° }
    What should 45 be changed to?
  17. 17.🐞 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?
  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 (8, 5). Its program:
    1. forward 4
    2. turn right
    3. forward 3
    It stops at (8, 6) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  19. 19.🐞 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?
  20. 20.🐞 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?
  21. 21.🔢 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
  22. 22.🔢 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
  23. 23.🐞 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?
  24. 24.🐞 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, 4). Its program:
    1. forward 4
    2. turn left
    3. forward 3
    It stops at (1, 4) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  25. 25.🐞 A mistake in a program is called a … (a) bug (b) sensor (c) gear (d) loop
  26. 26.🐞 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?
  27. 27.🔢 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
  28. 28.🐞 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, 4). 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 1 (c) line 3
  29. 29.🐞 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?
  30. 30.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) find the buggy line (b) fix one thing (c) run the program (d) test it again
  31. 31.🐞 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, 5). Its program:
    1. forward 5
    2. turn left
    3. forward 1
    It stops at (4, 6) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  32. 32.🔢 To debug a robot program, which comes first: “fix one thing” or “test it again”? (a) test it again (b) fix one thing
  33. 33.🐞 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?
  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.🐞 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?
  36. 36.🐞 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, 5). Its program:
    1. forward 3
    2. turn left
    3. forward 3
    It stops at (1, 5) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  37. 37.🐞 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?
  38. 38.🐞 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?
  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 (6, 4). Its program:
    1. forward 2
    2. turn right
    3. forward 2
    It stops at (7, 4) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  40. 40.🐞 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?

Answer key

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

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