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App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 71 · 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: icons with no meaning? (a) poor design (b) good design
  2. 2.True or false: strong colour contrast is poor button design. (a) True (b) False
  3. 3.True or false: a big, easy tap area is good button design. (a) True (b) False
  4. 4.Which colour pair is easy to read? (a) yellow on white (b) pale pink on white (c) white on dark green (d) red on green
  5. 5.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 36 px tall
    Back button: 48 px tall
    Send button: 48 px tall
    Cancel button: 52 px tall
  6. 6.Which colour pair is hard to read? (a) light grey on white (b) white on dark green (c) dark blue on white (d) black on pale grey
  7. 7.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 48 px tall
    Help button: 24 px tall
    Save button: 52 px tall
    Done button: 56 px tall     (a) Save (b) Done (c) Cancel (d) Help
  8. 8.🌗 Is black on yellow easy or hard to read on a button? (a) easy to read (b) hard to read
  9. 9.Which colour pair is hard to read? (a) white on dark green (b) dark blue on white (c) dark blue on black (d) black on yellow
  10. 10.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 44 px tall
    Next button: 48 px tall
    Help button: 40 px tall
    Save button: 44 px tall
  11. 11.🔘 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
    Send button: 32 px tall
    Save button: 40 px tall
  12. 12.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 44 px tall
    Send button: 60 px tall
    Next button: 60 px tall
    Cancel button: 56 px tall     (a) Cancel (b) Next (c) Back (d) Send
  13. 13.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 56 px tall
    Help button: 40 px tall
    Done button: 32 px tall
    Back button: 40 px tall
  14. 14.🔘 Our rule: buttons are at least 48 px tall. The Done button is 20 px tall. How many px taller must it be?
  15. 15.True or false: a tiny 20 px button is good button design. (a) False (b) True
  16. 16.🔘 Is this good or poor button design: a tiny 20 px button? (a) good design (b) poor design
  17. 17.🔘 Our rule: buttons are at least 48 px tall. The Send button is 20 px tall. How many px taller must it be?
  18. 18.True or false: grey text on grey is poor button design. (a) True (b) False
  19. 19.True or false: space between buttons is poor button design. (a) False (b) True
  20. 20.🔘 Our rule: buttons are at least 48 px tall. The Save button is 32 px tall. How many px taller must it be?
  21. 21.True or false: a clear word like Save is good button design. (a) False (b) True
  22. 22.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
  23. 23.True or false: buttons almost touching is good button design. (a) True (b) False
  24. 24.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 56 px tall
    Start button: 64 px tall
    Send button: 56 px tall
    Back button: 48 px tall
  25. 25.Which colour pair is hard to read? (a) white on black (b) yellow on white (c) white on dark green (d) black on pale grey
  26. 26.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
  27. 27.🌗 Is pale pink on white 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?
    Send button: 72 px tall
    Next button: 36 px tall
    Save button: 56 px tall     (a) Next (b) Send (c) Save
  29. 29.Which colour pair is easy to read? (a) yellow on white (b) light grey on white (c) dark blue on black (d) dark blue on white
  30. 30.🌗 Is yellow on white easy or hard to read on a button? (a) hard to read (b) easy to read
  31. 31.True or false: a big, easy tap area is poor button design. (a) True (b) False
  32. 32.🔘 Our rule: buttons are at least 48 px tall. The Save button is 36 px tall. How many px taller must it be?
  33. 33.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 40 px tall
    Help button: 44 px tall
    Cancel button: 44 px tall
    Back button: 36 px tall
  34. 34.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 52 px tall
    Send button: 52 px tall
    Back button: 60 px tall
  35. 35.🔘 Is this good or poor button design: buttons almost touching? (a) good design (b) poor design
  36. 36.Which colour pair is hard to read? (a) dark blue on white (b) black on pale grey (c) white on dark green (d) red on green
  37. 37.🔘 Our rule: buttons are at least 48 px tall. The Start button is 20 px tall. How many px taller must it be?
  38. 38.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
  39. 39.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 48 px tall
    Start button: 60 px tall
    Next button: 40 px tall
  40. 40.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 48 px tall
    Save button: 44 px tall
    Back button: 48 px tall
    Cancel button: 72 px tall     (a) Cancel (b) Save (c) Back (d) Send

Answer key

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

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