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App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 134 · 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) poor design (b) good 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) black on yellow
  3. 3.🌗 Is white on black easy or hard to read on a button? (a) easy to read (b) hard to read
  4. 4.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 56 px tall
    Save button: 68 px tall
    Cancel button: 36 px tall     (a) Next (b) Save (c) Cancel
  5. 5.Which colour pair is hard to read? (a) black on pale grey (b) dark blue on white (c) red on green (d) black on yellow
  6. 6.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 52 px tall
    Cancel button: 60 px tall
    Done button: 44 px tall
    Send button: 52 px tall
  7. 7.True or false: grey text on grey is good button design. (a) True (b) False
  8. 8.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 56 px tall
    Start button: 24 px tall
    Save button: 60 px tall     (a) Save (b) Next (c) Start
  9. 9.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 40 px tall
    Back button: 60 px tall
    Next button: 48 px tall
  10. 10.True or false: a clear word like Save is good button design. (a) True (b) False
  11. 11.🔘 Is this good or poor button design: buttons almost touching? (a) good design (b) poor design
  12. 12.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
  13. 13.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 68 px tall
    Send button: 44 px tall
    Save button: 72 px tall     (a) Done (b) Save (c) Send
  14. 14.🔘 Our rule: buttons are at least 48 px tall. The Start button is 20 px tall. How many px taller must it be?
  15. 15.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 52 px tall
    Save button: 40 px tall
    Cancel button: 40 px tall
  16. 16.🔘 Is this good or poor button design: a tiny 20 px button? (a) poor design (b) good design
  17. 17.Which colour pair is easy to read? (a) black on pale grey (b) pale pink on white (c) light grey on white (d) dark blue on black
  18. 18.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 48 px tall
    Send button: 32 px tall
    Help button: 40 px tall
    Back button: 60 px tall
  19. 19.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 36 px tall
    Send button: 32 px tall
    Cancel button: 52 px tall
  20. 20.True or false: a big, easy tap area is good button design. (a) True (b) False
  21. 21.🌗 Is light grey on white easy or hard to read on a button? (a) hard to read (b) easy to read
  22. 22.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 52 px tall
    Start button: 52 px tall
    Done button: 40 px tall
    Send button: 60 px tall     (a) Back (b) Done (c) Send (d) Start
  23. 23.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
  24. 24.🔘 Our rule: buttons are at least 48 px tall. The Send button is 40 px tall. How many px taller must it be?
  25. 25.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 60 px tall
    Back button: 64 px tall
    Start button: 44 px tall
    Send button: 48 px tall     (a) Back (b) Start (c) Send (d) Next
  26. 26.🔘 Our rule: buttons are at least 48 px tall. The Save button is 44 px tall. How many px taller must it be?
  27. 27.True or false: a tiny 20 px button is good button design. (a) False (b) True
  28. 28.🔘 Our rule: buttons are at least 48 px tall. The Start button is 32 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?
    Done button: 60 px tall
    Help button: 64 px tall
    Start button: 36 px tall
    Send button: 52 px tall     (a) Done (b) Start (c) Help (d) Send
  30. 30.🌗 Is red on green easy or hard to read on a button? (a) hard to read (b) easy to read
  31. 31.🔘 Our rule: buttons are at least 48 px tall. The Next button is 36 px tall. How many px taller must it be?
  32. 32.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
  33. 33.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 28 px tall
    Next button: 64 px tall
    Back button: 72 px tall     (a) Next (b) Back (c) Done
  34. 34.🌗 Is white on dark green easy or hard to read on a button? (a) hard to read (b) easy to read
  35. 35.🔘 Is this good or poor button design: grey text on grey? (a) poor design (b) good design
  36. 36.True or false: space between buttons is poor button design. (a) False (b) True
  37. 37.🌗 Is dark blue on black easy or hard to read on a button? (a) hard to read (b) easy to read
  38. 38.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 52 px tall
    Start button: 32 px tall
    Save button: 72 px tall
    Help button: 52 px tall     (a) Done (b) Save (c) Start (d) Help
  39. 39.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 68 px tall
    Save button: 36 px tall
    Send button: 52 px tall
    Start button: 72 px tall     (a) Save (b) Start (c) Done (d) Send
  40. 40.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 56 px tall
    Save button: 48 px tall
    Send button: 52 px tall
    Cancel button: 56 px tall

Answer key

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

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