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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 316 · 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 mistake in a program is called a … (a) loop (b) gear (c) bug (d) sensor
  2. 2.🔢 To debug a robot program, which comes first: “fix one thing” or “run the program”? (a) run the program (b) fix one thing
  3. 3.🐞 Why change only one thing at a time when debugging? (a) to make it slower (b) to confuse others (c) to see what fixed it (d) to save paper
  4. 4.🐞 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 3 (c) line 2
  5. 5.🐞 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 3
    2. turn right
    3. forward 2
    It stops at (7, 4) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  6. 6.🐞 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 5
    2. turn right
    3. forward 1
    It stops at (5, 5) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  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 (3, 4). Its program:
    1. forward 3
    2. turn left
    3. forward 2
    It stops at (3, 5) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  8. 8.🐞 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?
  9. 9.🐞 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?
  10. 10.🐞 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 (3, 4). Its program:
    1. forward 4
    2. turn left
    3. forward 1
    It stops at (4, 4) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  11. 11.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) the floor is clean (b) left and right mixed up (c) battery is too new (d) wheels are too round
  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 (5, 4). Its program:
    1. forward 3
    2. turn right
    3. forward 1
    It stops at (5, 3) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  13. 13.🔢 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
  14. 14.🐞 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, 4). Its program:
    1. forward 3
    2. turn right
    3. forward 1
    It stops at (5, 5) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  15. 15.🐞 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?
  16. 16.🔢 To debug a robot program, which is the FIRST step? (a) fix one thing (b) test it again (c) find the buggy line (d) run the program
  17. 17.🔢 To debug a robot program, which is the LAST step? (a) spot what went wrong (b) run the program (c) find the buggy line (d) test it again
  18. 18.🐞 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?
  19. 19.🐞 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?
  20. 20.🐞 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, 4). Its program:
    1. forward 5
    2. turn right
    3. forward 1
    It stops at (6, 5) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  21. 21.🔢 To debug a robot program, which comes first: “fix one thing” or “test it again”? (a) fix one thing (b) test it again
  22. 22.🐞 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, 5). Its program:
    1. forward 3
    2. turn left
    3. forward 1
    It stops at (3, 4) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  23. 23.🐞 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?
  24. 24.🐞 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 (3, 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 3 (b) line 1 (c) line 2
  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 (7, 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 2 (b) line 3 (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 (1, 5). Its program:
    1. forward 6
    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
  27. 27.🐞 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, 3). Its program:
    1. forward 2
    2. turn left
    3. forward 1
    It stops at (4, 3) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  28. 28.🐞 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 4
    2. turn right
    3. forward 1
    It stops at (6, 4) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  29. 29.🐞 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?
  30. 30.🔢 To debug a robot program, what comes right after “fix one thing”? (a) test it again (b) run the program (c) spot what went wrong (d) find the buggy line
  31. 31.🐞 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, 7). Its program:
    1. forward 5
    2. turn left
    3. forward 1
    It stops at (3, 7) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  32. 32.🐞 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?
  33. 33.🐞 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, 6). Its program:
    1. forward 7
    2. turn right
    3. forward 3
    It stops at (8, 7) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  34. 34.🔢 To debug a robot program, what comes right after “find the buggy line”? (a) spot what went wrong (b) test it again (c) fix one thing (d) run the program
  35. 35.🐞 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?
  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 (7, 6). Its program:
    1. forward 5
    2. turn right
    3. forward 3
    It stops at (8, 6) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  37. 37.🐞 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, 2). Its program:
    1. forward 3
    2. turn left
    3. forward 3
    It stops at (1, 3) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  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 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 (8, 8). Its program:
    1. forward 7
    2. turn right
    3. forward 3
    It stops at (8, 9) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  40. 40.🔢 To debug a robot program, which comes first: “find the buggy line” or “spot what went wrong”? (a) find the buggy line (b) spot what went wrong

Answer key

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

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