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App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 260 · 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.🌗 Is dark blue on white easy or hard to read on a button? (a) easy to read (b) hard to read
  3. 3.True or false: strong colour contrast is good button design. (a) True (b) False
  4. 4.🔘 Our rule: buttons are at least 48 px tall. The Send button is 32 px tall. How many px taller must it be?
  5. 5.🔘 Our rule: buttons are at least 48 px tall. The Send button is 20 px tall. How many px taller must it be?
  6. 6.Which colour pair is hard to read? (a) dark blue on white (b) light grey on white (c) black on pale grey (d) black on yellow
  7. 7.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
  8. 8.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 64 px tall
    Next button: 40 px tall
    Help button: 60 px tall
    Save button: 32 px tall
  9. 9.🌗 Is red on green easy or hard to read on a button? (a) easy to read (b) hard to read
  10. 10.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 40 px tall
    Help button: 32 px tall
    Back button: 36 px tall
    Done button: 48 px tall
  11. 11.🌗 Is pale pink on white easy or hard to read on a button? (a) hard to read (b) easy to read
  12. 12.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 60 px tall
    Done button: 40 px tall
    Cancel button: 32 px tall
  13. 13.🔘 Is this good or poor button design: icons with no meaning? (a) good design (b) poor design
  14. 14.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 40 px tall
    Cancel button: 44 px tall
    Save button: 60 px tall
  15. 15.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 68 px tall
    Send button: 64 px tall
    Cancel button: 24 px tall     (a) Send (b) Save (c) Cancel
  16. 16.True or false: a tiny 20 px button is good button design. (a) False (b) True
  17. 17.Which colour pair is easy to read? (a) pale pink on white (b) white on dark green (c) dark blue on black (d) light grey on white
  18. 18.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 32 px tall
    Cancel button: 48 px tall
    Save button: 44 px tall
  19. 19.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
  20. 20.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
  21. 21.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 32 px tall
    Done button: 48 px tall
    Start button: 56 px tall     (a) Start (b) Done (c) Back
  22. 22.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 52 px tall
    Send button: 56 px tall
    Start button: 52 px tall
    Done button: 44 px tall
  23. 23.🔘 Our rule: buttons are at least 48 px tall. The Start button is 24 px tall. How many px taller must it be?
  24. 24.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 48 px tall
    Help button: 48 px tall
    Send button: 40 px tall
    Done button: 48 px tall
  25. 25.🌗 Is light grey on white easy or hard to read on a button? (a) hard to read (b) easy to read
  26. 26.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 52 px tall
    Help button: 36 px tall
    Start button: 68 px tall
    Next button: 64 px tall     (a) Help (b) Next (c) Start (d) Done
  27. 27.🌗 Is white on dark green easy or hard to read on a button? (a) easy to read (b) hard to read
  28. 28.Which colour pair is easy to read? (a) light grey on white (b) dark blue on white (c) red on green (d) yellow on white
  29. 29.🔘 Our rule: buttons are at least 48 px tall. The Help button is 36 px tall. How many px taller must it be?
  30. 30.🔘 Is this good or poor button design: a tiny 20 px button? (a) good design (b) poor design
  31. 31.Which colour pair is hard to read? (a) white on dark green (b) red on green (c) dark blue on white (d) black on yellow
  32. 32.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 68 px tall
    Send button: 68 px tall
    Save button: 36 px tall
    Help button: 68 px tall     (a) Next (b) Send (c) Help (d) Save
  33. 33.True or false: a tiny 20 px button is poor button design. (a) False (b) True
  34. 34.True or false: buttons almost touching is good button design. (a) True (b) False
  35. 35.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 64 px tall
    Send button: 40 px tall
    Save button: 52 px tall
    Start button: 36 px tall
  36. 36.True or false: icons with no meaning is good button design. (a) False (b) True
  37. 37.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 60 px tall
    Done button: 68 px tall
    Start button: 24 px tall     (a) Done (b) Start (c) Back
  38. 38.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 32 px tall
    Start button: 32 px tall
    Help button: 44 px tall
    Done button: 60 px tall
  39. 39.True or false: strong colour contrast is poor button design. (a) True (b) False
  40. 40.🔘 Our rule: buttons are at least 48 px tall. The Back button is 36 px tall. How many px taller must it be?

Answer key

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

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