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App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 322 · 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: a big, easy tap area? (a) good design (b) poor design
  2. 2.Which colour pair is easy to read? (a) yellow on white (b) dark blue on black (c) pale pink on white (d) white on black
  3. 3.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 68 px tall
    Help button: 24 px tall
    Cancel button: 56 px tall     (a) Back (b) Help (c) Cancel
  4. 4.🌗 Is pale pink on white easy or hard to read on a button? (a) hard to read (b) easy to read
  5. 5.Which colour pair is easy to read? (a) yellow on white (b) pale pink on white (c) dark blue on white (d) dark blue on black
  6. 6.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 52 px tall
    Done button: 40 px tall
    Back button: 56 px tall
    Help button: 52 px tall
  7. 7.🔘 Our rule: buttons are at least 48 px tall. The Send button is 40 px tall. How many px taller must it be?
  8. 8.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 56 px tall
    Start button: 48 px tall
    Cancel button: 40 px tall
    Help button: 32 px tall
  9. 9.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 52 px tall
    Start button: 68 px tall
    Save button: 36 px tall     (a) Start (b) Save (c) Send
  10. 10.True or false: a tiny 20 px button is poor button design. (a) False (b) True
  11. 11.Which colour pair is easy to read? (a) pale pink on white (b) dark blue on black (c) black on yellow (d) yellow on white
  12. 12.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 60 px tall
    Start button: 64 px tall
    Save button: 52 px tall
    Back button: 32 px tall     (a) Send (b) Start (c) Save (d) Back
  13. 13.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
  14. 14.🌗 Is black on pale grey easy or hard to read on a button? (a) easy to read (b) hard to read
  15. 15.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 72 px tall
    Done button: 36 px tall
    Help button: 56 px tall
    Next button: 68 px tall     (a) Help (b) Start (c) Next (d) Done
  16. 16.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
  17. 17.Which colour pair is hard to read? (a) white on black (b) white on dark green (c) black on yellow (d) red on green
  18. 18.🔘 Is this good or poor button design: icons with no meaning? (a) poor design (b) good design
  19. 19.🔘 Our rule: buttons are at least 48 px tall. The Help button is 44 px tall. How many px taller must it be?
  20. 20.🔘 Our rule: buttons are at least 48 px tall. The Save button is 36 px tall. How many px taller must it be?
  21. 21.🌗 Is dark blue on black easy or hard to read on a button? (a) hard to read (b) easy to read
  22. 22.🌗 Is red on green easy or hard to read on a button? (a) easy to read (b) hard to read
  23. 23.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 48 px tall
    Cancel button: 60 px tall
    Help button: 48 px tall
    Save button: 40 px tall     (a) Next (b) Cancel (c) Help (d) Save
  24. 24.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
  25. 25.True or false: strong colour contrast is good 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?
    Save button: 40 px tall
    Help button: 52 px tall
    Back button: 56 px tall
  27. 27.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
  28. 28.🔘 Our rule: buttons are at least 48 px tall. The Save button is 24 px tall. How many px taller must it be?
  29. 29.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 36 px tall
    Next button: 68 px tall
    Send button: 64 px tall
    Start button: 68 px tall     (a) Cancel (b) Start (c) Send (d) Next
  30. 30.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 44 px tall
    Cancel button: 64 px tall
    Start button: 60 px tall
    Help button: 48 px tall
  31. 31.True or false: grey text on grey is good button design. (a) True (b) False
  32. 32.🌗 Is light grey on white easy or hard to read on a button? (a) hard to read (b) easy to read
  33. 33.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 32 px tall
    Save button: 48 px tall
    Help button: 44 px tall
  34. 34.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 36 px tall. How many px taller must it be?
  35. 35.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 56 px tall
    Save button: 52 px tall
    Cancel button: 52 px tall
  36. 36.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 52 px tall
    Done button: 60 px tall
    Start button: 52 px tall
    Help button: 28 px tall     (a) Back (b) Done (c) Start (d) Help
  37. 37.🔘 Is this good or poor button design: grey text on grey? (a) good design (b) poor design
  38. 38.🔘 Our rule: buttons are at least 48 px tall. The Start button is 28 px tall. How many px taller must it be?
  39. 39.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 40 px tall
    Cancel button: 52 px tall
    Help button: 40 px tall
  40. 40.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 36 px tall
    Done button: 48 px tall
    Cancel button: 64 px tall     (a) Save (b) Cancel (c) Done

Answer key

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

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