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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 64 · 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 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, 7). Its program:
    1. forward 5
    2. turn left
    3. forward 2
    It stops at (2, 7) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  2. 2.🐞 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 left
    3. forward 2
    It stops at (3, 6) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  3. 3.🔢 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
  4. 4.🐞 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, 7). Its program:
    1. forward 6
    2. turn right
    3. forward 2
    It stops at (7, 7) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  5. 5.🐞 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?
  6. 6.🐞 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, 4). Its program:
    1. forward 3
    2. turn left
    3. forward 4
    It stops at (0, 4) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  7. 7.🐞 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?
  8. 8.🐞 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 (4, 4). Its program:
    1. forward 3
    2. turn left
    3. forward 1
    It stops at (4, 3) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  9. 9.🐞 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?
  10. 10.🔢 To debug a robot program, which is the FIRST step? (a) test it again (b) fix one thing (c) run the program (d) spot what went wrong
  11. 11.🐞 A mistake in a program is called a … (a) loop (b) gear (c) bug (d) sensor
  12. 12.🐞 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?
  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 (5, 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 1 (b) line 3 (c) line 2
  14. 14.🔢 To debug a robot program, which comes first: “test it again” or “fix one thing”? (a) test it again (b) fix one thing
  15. 15.🐞 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?
  16. 16.🐞 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
  17. 17.🐞 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?
  18. 18.🔢 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
  19. 19.🐞 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) battery is too new (d) left and right mixed up
  20. 20.🐞 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 6
    2. turn right
    3. forward 2
    It stops at (6, 8) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  21. 21.🔢 To debug a robot program, which comes first: “run the program” or “spot what went wrong”? (a) run the program (b) spot what went wrong
  22. 22.🐞 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?
  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 (7, 5). Its program:
    1. forward 2
    2. turn right
    3. forward 2
    It stops at (7, 4) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  24. 24.🐞 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?
  25. 25.🐞 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?
  26. 26.🐞 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
  27. 27.🐞 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?
  28. 28.🐞 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?
  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.🐞 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 left
    3. forward 1
    It stops at (3, 6) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  31. 31.🐞 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, 6). Its program:
    1. forward 5
    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
  32. 32.🔢 To debug a robot program, what comes right after “run the program”? (a) fix one thing (b) find the buggy line (c) spot what went wrong (d) test it again
  33. 33.🐞 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?
  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 72° }
    What should 72 be changed to?
  35. 35.🔢 To debug a robot program, which is the LAST step? (a) test it again (b) find the buggy line (c) spot what went wrong (d) run the program
  36. 36.🐞 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?
  37. 37.🐞 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?
  38. 38.🔢 To debug a robot program, which comes first: “run the program” or “test it again”? (a) run the program (b) test it again
  39. 39.🐞 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?
  40. 40.🔢 To debug a robot program, which comes first: “fix one thing” or “run the program”? (a) fix one thing (b) run the program

Answer key

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

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