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Robotics Worksheet: Debugging Robot Programs

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

Answer key

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

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