← Debugging robot programs lesson New set →

Robotics Worksheet: Debugging Robot Programs

Robotics lesson 26: Debugging robot programs · Set 61 · 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, 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 3
    2. turn right
    3. forward 3
    It stops at (7, 3) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  2. 2.🐞 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 (5, 6). Its program:
    1. forward 5
    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
  3. 3.🐞 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 (4, 8). Its program:
    1. forward 6
    2. turn left
    3. forward 2
    It stops at (3, 8) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  4. 4.🐞 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
  5. 5.🐞 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?
  6. 6.🐞 A robot turns the wrong way at every corner. What is the likely bug? (a) the floor is clean (b) left and right mixed up (c) battery is too new (d) wheels are too round
  7. 7.🔢 To debug a robot program, which comes first: “test it again” or “find the buggy line”? (a) find the buggy line (b) test it again
  8. 8.🐞 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?
  9. 9.🐞 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?
  10. 10.🔢 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
  11. 11.🔢 To debug a robot program, which is the FIRST step? (a) find the buggy line (b) test it again (c) fix one thing (d) run the program
  12. 12.🐞 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?
  13. 13.🐞 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?
  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 120° }
    What should 120 be changed to?
  15. 15.🐞 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?
  16. 16.🐞 A mistake in a program is called a … (a) loop (b) sensor (c) bug (d) gear
  17. 17.🐞 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 left
    3. forward 1
    It stops at (4, 6) instead. Which line has the bug?     (a) line 2 (b) line 1 (c) line 3
  18. 18.🐞 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, 2). Its program:
    1. forward 2
    2. turn right
    3. forward 1
    It stops at (6, 2) instead. Which line has the bug?     (a) line 3 (b) line 1 (c) line 2
  19. 19.🐞 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?
  20. 20.🔢 To debug a robot program, which is the LAST step? (a) find the buggy line (b) spot what went wrong (c) fix one thing (d) test it again
  21. 21.🔢 To debug a robot program, what comes right after “spot what went wrong”? (a) test it again (b) run the program (c) find the buggy line (d) fix one thing
  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 45° }
    What should 45 be changed to?
  23. 23.🐞 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?
  24. 24.🐞 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?
  25. 25.🐞 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?
  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 (4, 7). Its program:
    1. forward 6
    2. turn right
    3. forward 1
    It stops at (6, 7) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  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, 6). Its program:
    1. forward 5
    2. turn left
    3. forward 3
    It stops at (1, 6) instead. Which line has the bug?     (a) line 2 (b) line 3 (c) line 1
  28. 28.🔢 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
  29. 29.🐞 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?
  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, 7). Its program:
    1. forward 5
    2. turn left
    3. forward 3
    It stops at (2, 7) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  31. 31.🐞 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 3
    2. turn right
    3. forward 1
    It stops at (6, 5) instead. Which line has the bug?     (a) line 3 (b) line 2 (c) line 1
  32. 32.🔢 To debug a robot program, what comes right after “fix one thing”? (a) spot what went wrong (b) run the program (c) test it again (d) find the buggy line
  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 (3, 5). 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 2 (c) line 3
  34. 34.🐞 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?
  35. 35.🔢 To debug a robot program, what comes right after “run the program”? (a) spot what went wrong (b) find the buggy line (c) test it again (d) fix one thing
  36. 36.🐞 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?
  37. 37.🐞 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, 5). Its program:
    1. forward 5
    2. turn left
    3. forward 4
    It stops at (0, 5) instead. Which line has the bug?     (a) line 1 (b) line 3 (c) line 2
  38. 38.🐞 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?
  39. 39.🔢 To debug a robot program, which comes first: “spot what went wrong” or “run the program”? (a) run the program (b) spot what went wrong
  40. 40.🐞 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?

Answer key

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

Free robotics lessons, practice and worksheets at talentjr.in/robotics-for-kids