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Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 6 · 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 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?
  2. 2.🐞 This program should draw a regular pentagon (5 equal sides), but the shape does not close:
    repeat 5 { forward 10 cm; turn right 120° }
    What should 120 be changed to?
  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) fix one thing (b) test it again (c) run the program (d) find the buggy line
  5. 5.🔢 To debug a robot program, what comes right after “find the buggy line”? (a) fix one thing (b) test it again (c) run the program (d) spot what went wrong
  6. 6.🐞 A mistake in a program is called a … (a) gear (b) sensor (c) bug (d) loop
  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 (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 1 (c) line 3
  9. 9.🐞 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
  10. 10.🐞 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?
  11. 11.🐞 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?
  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 (2, 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 2 (b) line 3 (c) line 1
  13. 13.🐞 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 (6, 5). Its program:
    1. forward 5
    2. turn left
    3. forward 1
    It stops at (4, 5) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  14. 14.🐞 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?
  15. 15.🔢 To debug a robot program, which is the FIRST step? (a) find the buggy line (b) run the program (c) spot what went wrong (d) fix one thing
  16. 16.🐞 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?
  17. 17.🐞 Why change only one thing at a time when debugging? (a) to see what fixed it (b) to save paper (c) to make it slower (d) to confuse others
  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 90° }
    What should 90 be changed to?
  19. 19.🔢 To debug a robot program, what comes right after “run the program”? (a) test it again (b) fix one thing (c) spot what went wrong (d) find the buggy line
  20. 20.🔢 To debug a robot program, which is the LAST step? (a) run the program (b) find the buggy line (c) fix one thing (d) test it again
  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 45° }
    What should 45 be changed to?
  22. 22.🐞 This program should draw a regular hexagon (6 equal sides), but the shape does not close:
    repeat 6 { forward 10 cm; turn right 120° }
    What should 120 be changed to?
  23. 23.🐞 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?
  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 72° }
    What should 72 be changed to?
  25. 25.🐞 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?
  26. 26.🐞 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, 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 3 (b) line 2 (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 120° }
    What should 120 be changed to?
  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, 5). 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 1 (c) line 3
  29. 29.🐞 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 (7, 2). Its program:
    1. forward 3
    2. turn right
    3. forward 2
    It stops at (7, 3) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  30. 30.🐞 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, 6). Its program:
    1. forward 5
    2. turn right
    3. forward 3
    It stops at (8, 7) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  31. 31.🐞 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?
  32. 32.🐞 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?
  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 (6, 2). Its program:
    1. forward 2
    2. turn right
    3. forward 2
    It stops at (7, 2) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  34. 34.🐞 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, 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 2 (b) line 3 (c) line 1
  35. 35.🐞 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 (8, 2). Its program:
    1. forward 2
    2. turn left
    3. forward 3
    It stops at (2, 2) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  36. 36.🐞 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 (2, 3). Its program:
    1. forward 2
    2. turn left
    3. forward 3
    It stops at (1, 3) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  37. 37.🐞 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, 6). Its program:
    1. forward 6
    2. turn left
    3. forward 2
    It stops at (3, 6) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  38. 38.🐞 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, 5). Its program:
    1. forward 6
    2. turn right
    3. forward 3
    It stops at (7, 6) instead. Which line has the bug?     (a) line 1 (b) line 2 (c) line 3
  39. 39.🐞 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?
  40. 40.🔢 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

Answer key

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

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