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App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 53 · 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.

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

Answer key

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

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