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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 309 · 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.

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  1. 1.🔢 To debug a robot program, what comes right after “run the program”? (a) test it again (b) find the buggy line (c) fix one thing (d) spot what went wrong
  2. 2.🔢 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
  3. 3.🐞 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?
  4. 4.🐞 Why change only one thing at a time when debugging? (a) to confuse others (b) to make it slower (c) to save paper (d) to see what fixed it
  5. 5.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) wheels are too round (b) the floor is clean (c) left and right mixed up (d) battery is too new
  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 (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 3 (b) line 2 (c) line 1
  7. 7.🐞 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?
  8. 8.🐞 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 6
    2. turn left
    3. forward 2
    It stops at (3, 8) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  9. 9.🐞 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, 3). Its program:
    1. forward 2
    2. turn left
    3. forward 2
    It stops at (2, 3) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  10. 10.🐞 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?
  11. 11.🐞 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, 3). 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
  12. 12.🔢 To debug a robot program, which comes first: “find the buggy line” or “test it again”? (a) test it again (b) find the buggy line
  13. 13.🔢 To debug a robot program, which is the FIRST step? (a) find the buggy line (b) spot what went wrong (c) fix one thing (d) run the program
  14. 14.🐞 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?
  15. 15.🔢 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
  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 72° }
    What should 72 be changed to?
  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 hexagon (6 equal sides), but the shape does not close:
    repeat 6 { forward 10 cm; turn right 72° }
    What should 72 be changed to?
  19. 19.🐞 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?
  20. 20.🐞 A mistake in a program is called a … (a) sensor (b) bug (c) gear (d) loop
  21. 21.🔢 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
  22. 22.🐞 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, 3). Its program:
    1. forward 2
    2. turn right
    3. forward 2
    It stops at (7, 3) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  23. 23.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 5 { forward 10 cm; turn right 45° }
    What should the number 5 after “repeat” be?
  24. 24.🐞 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?
  25. 25.🐞 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?
  26. 26.🔢 To debug a robot program, which is the LAST step? (a) spot what went wrong (b) test it again (c) run the program (d) fix one thing
  27. 27.🐞 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?
  28. 28.🔢 To debug a robot program, which comes first: “spot what went wrong” or “test it again”? (a) test it again (b) spot what went wrong
  29. 29.🐞 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?
  30. 30.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 2 { forward 10 cm; turn right 45° }
    What should the number 2 after “repeat” be?
  31. 31.🐞 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 2 (b) line 1 (c) line 3
  32. 32.🐞 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, 7). Its program:
    1. forward 7
    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
  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 (2, 5). Its program:
    1. forward 4
    2. turn left
    3. forward 3
    It stops at (2, 4) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  34. 34.🐞 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?
  35. 35.🔢 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
  36. 36.🐞 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 3
    2. turn right
    3. forward 4
    It stops at (9, 5) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  37. 37.🔢 To debug a robot program, which comes first: “test it again” or “fix one thing”? (a) test it again (b) fix one thing
  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.🔢 To debug a robot program, which comes first: “fix one thing” or “find the buggy line”? (a) find the buggy line (b) fix one thing
  40. 40.🔢 To debug a robot program, which comes first: “spot what went wrong” or “run the program”? (a) spot what went wrong (b) run the program

Answer key

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

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