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App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 559 · 40 questions
TalentJR

Developer's tip (Big and bold): Our rule: every button is at least 48 px tall. Missing px = 48 − height. Leave space between buttons; use clear words like Save or Send. Strong contrast (black on yellow, white on dark green) is easy to read; similar colours are hard.

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  1. 1.🔘 Is this good or poor button design: buttons almost touching? (a) good design (b) poor design
  2. 2.Which colour pair is easy to read? (a) black on yellow (b) yellow on white (c) pale pink on white (d) light grey on white
  3. 3.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 64 px tall
    Save button: 36 px tall
    Next button: 32 px tall
    Back button: 56 px tall
  4. 4.Which colour pair is hard to read? (a) dark blue on white (b) black on pale grey (c) yellow on white (d) white on black
  5. 5.🔘 Is this good or poor button design: a tiny 20 px button? (a) poor design (b) good design
  6. 6.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
  7. 7.🌗 Is dark blue on white easy or hard to read on a button? (a) easy to read (b) hard to read
  8. 8.True or false: space between buttons is good button design. (a) True (b) False
  9. 9.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 40 px tall
    Cancel button: 52 px tall
    Save button: 60 px tall     (a) Cancel (b) Save (c) Done
  10. 10.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 60 px tall
    Send button: 36 px tall
    Done button: 64 px tall
    Save button: 52 px tall
  11. 11.🔘 Our rule: buttons are at least 48 px tall. The Start button is 24 px tall. How many px taller must it be?
  12. 12.🔘 Our rule: buttons are at least 48 px tall. The Next button is 44 px tall. How many px taller must it be?
  13. 13.Which colour pair is hard to read? (a) black on pale grey (b) white on dark green (c) dark blue on white (d) pale pink on white
  14. 14.🌗 Is pale pink on white easy or hard to read on a button? (a) hard to read (b) easy to read
  15. 15.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
  16. 16.🔘 Our rule: buttons are at least 48 px tall. The Save button is 24 px tall. How many px taller must it be?
  17. 17.True or false: grey text on grey is poor button design. (a) False (b) True
  18. 18.Which colour pair is hard to read? (a) white on dark green (b) dark blue on black (c) dark blue on white (d) black on pale grey
  19. 19.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 52 px tall
    Help button: 36 px tall
    Done button: 64 px tall
  20. 20.🔘 Is this good or poor button design: icons with no meaning? (a) good design (b) poor design
  21. 21.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 32 px tall
    Back button: 52 px tall
    Save button: 32 px tall
  22. 22.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 44 px tall
    Send button: 52 px tall
    Start button: 64 px tall     (a) Done (b) Send (c) Start
  23. 23.🌗 Is black on pale grey easy or hard to read on a button? (a) hard to read (b) easy to read
  24. 24.True or false: space between buttons is poor button design. (a) False (b) True
  25. 25.True or false: a clear word like Save is poor button design. (a) True (b) False
  26. 26.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 44 px tall
    Back button: 44 px tall
    Save button: 32 px tall
  27. 27.True or false: icons with no meaning is good button design. (a) False (b) True
  28. 28.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 40 px tall
    Help button: 52 px tall
    Start button: 60 px tall
    Back button: 60 px tall     (a) Help (b) Save (c) Back (d) Start
  29. 29.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
  30. 30.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 36 px tall. How many px taller must it be?
  31. 31.True or false: strong colour contrast is good button design. (a) True (b) False
  32. 32.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 64 px tall
    Start button: 68 px tall
    Help button: 36 px tall     (a) Save (b) Help (c) Start
  33. 33.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 48 px tall
    Back button: 24 px tall
    Cancel button: 68 px tall
    Start button: 68 px tall     (a) Back (b) Start (c) Cancel (d) Next
  34. 34.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 48 px tall
    Start button: 36 px tall
    Help button: 36 px tall
    Back button: 44 px tall
  35. 35.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 64 px tall
    Back button: 48 px tall
    Next button: 60 px tall
    Start button: 40 px tall
  36. 36.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 64 px tall
    Start button: 72 px tall
    Save button: 64 px tall
    Back button: 36 px tall     (a) Back (b) Cancel (c) Start (d) Save
  37. 37.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 36 px tall
    Done button: 32 px tall
    Help button: 36 px tall
  38. 38.Which colour pair is easy to read? (a) pale pink on white (b) dark blue on black (c) yellow on white (d) dark blue on white
  39. 39.True or false: a clear word like Save is good button design. (a) True (b) False
  40. 40.🌗 Is yellow on white easy or hard to read on a button? (a) hard to read (b) easy to read

Answer key

  1. poor design
  2. black on yellow
  3. 2
  4. yellow on white
  5. poor design
  6. good design
  7. easy to read
  8. True
  9. Done
  10. 3
  11. 24
  12. 4
  13. pale pink on white
  14. hard to read
  15. good design
  16. 24
  17. True
  18. dark blue on black
  19. 2
  20. poor design
  21. 1
  22. Done
  23. easy to read
  24. False
  25. False
  26. 0
  27. False
  28. Save
  29. good design
  30. 12
  31. True
  32. Help
  33. Back
  34. 1
  35. 3
  36. Back
  37. 0
  38. dark blue on white
  39. True
  40. hard to read

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