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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 650 · 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.🔢 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
  2. 2.🐞 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?
  3. 3.🔢 To debug a robot program, what comes right after “fix one thing”? (a) find the buggy line (b) test it again (c) run the program (d) spot what went wrong
  4. 4.🐞 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
  5. 5.🐞 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, 6). 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 3 (c) line 1
  6. 6.🐞 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?
  7. 7.🐞 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?
  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, 4). Its program:
    1. forward 3
    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
  9. 9.🔢 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
  10. 10.🐞 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, 6). Its program:
    1. forward 5
    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
  11. 11.🐞 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?
  12. 12.🐞 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?
  13. 13.🐞 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 right
    3. forward 2
    It stops at (6, 4) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  14. 14.🔢 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
  15. 15.🐞 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?
  16. 16.🐞 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?
  17. 17.🐞 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 3
    2. turn right
    3. forward 2
    It stops at (7, 4) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  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 (3, 8). Its program:
    1. forward 6
    2. turn left
    3. forward 2
    It stops at (2, 8) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  19. 19.🐞 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, 8). Its program:
    1. forward 5
    2. turn left
    3. forward 2
    It stops at (2, 7) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  20. 20.🐞 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, 6). Its program:
    1. forward 5
    2. turn right
    3. forward 3
    It stops at (7, 6) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  21. 21.🐞 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?
  22. 22.🔢 To debug a robot program, which is the LAST step? (a) spot what went wrong (b) run the program (c) test it again (d) find the buggy line
  23. 23.🔢 To debug a robot program, what comes right after “run the program”? (a) test it again (b) find the buggy line (c) spot what went wrong (d) fix one thing
  24. 24.🐞 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?
  25. 25.🐞 A mistake in a program is called a … (a) loop (b) gear (c) bug (d) sensor
  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 (5, 2). Its program:
    1. forward 2
    2. turn left
    3. forward 1
    It stops at (3, 2) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  27. 27.🔢 To debug a robot program, which comes first: “find the buggy line” or “run the program”? (a) run the program (b) find the buggy line
  28. 28.🐞 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, 6). Its program:
    1. forward 6
    2. turn right
    3. forward 4
    It stops at (8, 6) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  29. 29.🐞 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 (3, 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
  30. 30.🐞 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?
  31. 31.🐞 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?
  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.🔢 To debug a robot program, which comes first: “test it again” or “run the program”? (a) test it again (b) run the program
  34. 34.🔢 To debug a robot program, which is the FIRST step? (a) find the buggy line (b) spot what went wrong (c) run the program (d) fix one thing
  35. 35.🐞 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
  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 (6, 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 3 (c) line 1
  37. 37.🐞 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 (2, 3). Its program:
    1. forward 2
    2. turn left
    3. forward 2
    It stops at (3, 3) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  38. 38.🐞 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?
  39. 39.🐞 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?
  40. 40.🔢 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

Answer key

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

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