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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 113 · 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 turns the wrong way at every corner. What is the likely bug? (a) left and right mixed up (b) the floor is clean (c) wheels are too round (d) battery is too new
  2. 2.🐞 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, 8). Its program:
    1. forward 6
    2. turn left
    3. forward 3
    It stops at (1, 8) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  3. 3.🔢 To debug a robot program, which is the LAST step? (a) find the buggy line (b) test it again (c) spot what went wrong (d) run the program
  4. 4.🔢 To debug a robot program, which is the FIRST step? (a) run the program (b) fix one thing (c) test it again (d) find the buggy line
  5. 5.🐞 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?
  6. 6.🐞 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?
  7. 7.🐞 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?
  8. 8.🔢 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
  9. 9.🐞 A mistake in a program is called a … (a) loop (b) bug (c) gear (d) sensor
  10. 10.🐞 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, 7). Its program:
    1. forward 5
    2. turn right
    3. forward 2
    It stops at (6, 7) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  11. 11.🔢 To debug a robot program, which comes first: “run the program” or “fix one thing”? (a) fix one thing (b) run the program
  12. 12.🐞 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?
  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 (4, 7). Its program:
    1. forward 5
    2. turn right
    3. forward 1
    It stops at (6, 7) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  14. 14.🐞 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 (2, 6). Its program:
    1. forward 5
    2. turn left
    3. forward 3
    It stops at (1, 6) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  15. 15.🐞 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?
  16. 16.🐞 Why change only one thing at a time when debugging? (a) to make it slower (b) to save paper (c) to see what fixed it (d) to confuse others
  17. 17.🐞 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?
  18. 18.🐞 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?
  19. 19.🐞 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?
  20. 20.🐞 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?
  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 72° }
    What should 72 be changed to?
  22. 22.🔢 To debug a robot program, what comes right after “run the program”? (a) fix one thing (b) spot what went wrong (c) test it again (d) find the buggy line
  23. 23.🔢 To debug a robot program, what comes right after “fix one thing”? (a) run the program (b) find the buggy line (c) test it again (d) spot what went wrong
  24. 24.🐞 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?
  25. 25.🐞 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, 4). Its program:
    1. forward 2
    2. turn left
    3. forward 1
    It stops at (3, 3) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  26. 26.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) fix one thing (b) find the buggy line (c) run the program (d) test it again
  27. 27.🐞 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 (6, 3). Its program:
    1. forward 3
    2. turn right
    3. forward 2
    It stops at (7, 3) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  28. 28.🐞 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?
  29. 29.🐞 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?
  30. 30.🐞 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 5
    2. turn left
    3. forward 1
    It stops at (4, 6) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  31. 31.🐞 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, 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 2 (b) line 1 (c) line 3
  32. 32.🐞 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 7
    2. turn right
    3. forward 1
    It stops at (5, 7) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  33. 33.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 3 { forward 10 cm; turn right 45° }
    What should the number 3 after “repeat” be?
  34. 34.🐞 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?
  35. 35.🔢 To debug a robot program, which comes first: “fix one thing” or “find the buggy line”? (a) fix one thing (b) find the buggy line
  36. 36.🐞 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, 4). Its program:
    1. forward 4
    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
  37. 37.🔢 To debug a robot program, which comes first: “find the buggy line” or “run the program”? (a) find the buggy line (b) run the program
  38. 38.🐞 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?
  39. 39.🐞 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 2 (b) line 1 (c) line 3
  40. 40.🐞 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 (6, 4). Its program:
    1. forward 2
    2. turn right
    3. forward 2
    It stops at (6, 3) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2

Answer key

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

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