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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 517 · 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 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?
  2. 2.🐞 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, 2). Its program:
    1. forward 2
    2. turn left
    3. forward 2
    It stops at (2, 2) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  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.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) find the buggy line (b) fix one thing (c) test it again (d) run the program
  5. 5.🔢 To debug a robot program, which comes first: “spot what went wrong” or “fix one thing”? (a) fix one thing (b) spot what went wrong
  6. 6.🐞 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, 6). Its program:
    1. forward 4
    2. turn right
    3. forward 2
    It stops at (7, 6) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  7. 7.🔢 To debug a robot program, which is the FIRST step? (a) run the program (b) test it again (c) find the buggy line (d) spot what went wrong
  8. 8.🐞 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 (1, 7). Its program:
    1. forward 4
    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
  9. 9.🔢 To debug a robot program, which comes first: “fix one thing” or “run the program”? (a) run the program (b) fix one thing
  10. 10.🐞 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?
  11. 11.🐞 A mistake in a program is called a … (a) bug (b) sensor (c) loop (d) gear
  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 45° }
    What should 45 be changed to?
  13. 13.🔢 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
  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 (1, 6). Its program:
    1. forward 4
    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
  15. 15.🐞 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) left and right mixed up (d) wheels are too round
  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 120° }
    What should 120 be changed to?
  17. 17.🐞 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?
  18. 18.🐞 This program should draw a regular octagon (8 equal sides), but the shape does not close:
    repeat 8 { forward 10 cm; turn right 120° }
    What should 120 be changed to?
  19. 19.🐞 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 left
    3. forward 4
    It stops at (1, 6) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  20. 20.🐞 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?
  21. 21.🐞 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?
  22. 22.🐞 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?
  23. 23.🐞 Why change only one thing at a time when debugging? (a) to see what fixed it (b) to make it slower (c) to save paper (d) to confuse others
  24. 24.🔢 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
  25. 25.🐞 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?
  26. 26.🐞 This program should draw a regular hexagon (6 equal sides), but it leaves a gap:
    repeat 5 { forward 10 cm; turn right 60° }
    What should the number 5 after “repeat” be?
  27. 27.🐞 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, 4). Its program:
    1. forward 3
    2. turn right
    3. forward 2
    It stops at (6, 4) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  28. 28.🐞 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 (8, 3). Its program:
    1. forward 2
    2. turn left
    3. forward 3
    It stops at (2, 3) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  29. 29.🐞 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?
  30. 30.🐞 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, 6). Its program:
    1. forward 4
    2. turn right
    3. forward 2
    It stops at (6, 6) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  31. 31.🐞 This program should draw a regular octagon (8 equal sides), but it leaves a gap:
    repeat 4 { forward 10 cm; turn right 45° }
    What should the number 4 after “repeat” be?
  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 (3, 2). Its program:
    1. forward 3
    2. turn left
    3. forward 1
    It stops at (3, 3) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  33. 33.🔢 To debug a robot program, which is the LAST step? (a) spot what went wrong (b) test it again (c) find the buggy line (d) run the program
  34. 34.🐞 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?
  35. 35.🔢 To debug a robot program, which comes first: “run the program” or “fix one thing”? (a) run the program (b) fix one thing
  36. 36.🐞 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 (1, 5). Its program:
    1. forward 3
    2. turn left
    3. forward 2
    It stops at (2, 5) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  37. 37.🐞 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?
  38. 38.🐞 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?
  39. 39.🐞 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?
  40. 40.🔢 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

Answer key

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

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