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App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 307 · 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.True or false: grey text on grey is poor button design. (a) True (b) False
  2. 2.🌗 Is black on yellow easy or hard to read on a button? (a) easy to read (b) hard to read
  3. 3.Which colour pair is easy to read? (a) red on green (b) yellow on white (c) pale pink on white (d) black on pale grey
  4. 4.True or false: space between buttons is good button design. (a) False (b) True
  5. 5.🌗 Is black on pale grey easy or hard to read on a button? (a) easy to read (b) hard to read
  6. 6.Which colour pair is easy to read? (a) pale pink on white (b) light grey on white (c) black on yellow (d) dark blue on black
  7. 7.Which colour pair is hard to read? (a) light grey on white (b) white on black (c) black on pale grey (d) white on dark green
  8. 8.🔘 Is this good or poor button design: grey text on grey? (a) poor design (b) good design
  9. 9.🌗 Is white on black 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. Which button is too small?
    Save button: 68 px tall
    Help button: 32 px tall
    Done button: 52 px tall
    Back button: 64 px tall     (a) Back (b) Done (c) Help (d) Save
  11. 11.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
  12. 12.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 48 px tall
    Next button: 48 px tall
    Send button: 60 px tall
    Save button: 28 px tall     (a) Back (b) Next (c) Save (d) Send
  13. 13.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 36 px tall
    Start button: 56 px tall
    Next button: 44 px tall
    Save button: 48 px tall
  14. 14.🔘 Our rule: buttons are at least 48 px tall. The Send button is 44 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?
    Back button: 56 px tall
    Cancel button: 60 px tall
    Next button: 56 px tall
  16. 16.True or false: a big, easy tap area is poor button design. (a) True (b) False
  17. 17.🔘 Our rule: buttons are at least 48 px tall. The Help button is 24 px tall. How many px taller must it be?
  18. 18.🔘 Is this good or poor button design: buttons almost touching? (a) good design (b) poor design
  19. 19.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
  20. 20.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 32 px tall
    Done button: 60 px tall
    Save button: 32 px tall
  21. 21.Which colour pair is hard to read? (a) white on dark green (b) white on black (c) black on yellow (d) red on green
  22. 22.Which colour pair is hard to read? (a) dark blue on white (b) black on yellow (c) white on dark green (d) dark blue on black
  23. 23.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 56 px tall
    Next button: 52 px tall
    Cancel button: 40 px tall
    Send button: 48 px tall
  24. 24.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 56 px tall
    Back button: 32 px tall
    Done button: 60 px tall
  25. 25.True or false: icons with no meaning is good button design. (a) True (b) False
  26. 26.True or false: a clear word like Save is good button design. (a) True (b) False
  27. 27.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 52 px tall
    Help button: 36 px tall
    Back button: 72 px tall
    Done button: 48 px tall     (a) Done (b) Help (c) Back (d) Cancel
  28. 28.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 36 px tall
    Save button: 40 px tall
    Help button: 40 px tall
  29. 29.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 64 px tall
    Start button: 64 px tall
    Next button: 64 px tall
    Help button: 52 px tall
  30. 30.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 40 px tall
    Done button: 32 px tall
    Help button: 52 px tall
    Save button: 36 px tall
  31. 31.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 24 px tall
    Cancel button: 60 px tall
    Save button: 52 px tall
    Done button: 64 px tall     (a) Cancel (b) Done (c) Save (d) Start
  32. 32.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 64 px tall
    Save button: 32 px tall
    Help button: 48 px tall
    Send button: 64 px tall     (a) Next (b) Send (c) Save (d) Help
  33. 33.🔘 Is this good or poor button design: strong colour contrast? (a) poor design (b) good design
  34. 34.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 60 px tall
    Help button: 32 px tall
    Back button: 60 px tall
  35. 35.True or false: buttons almost touching is good button design. (a) True (b) False
  36. 36.🌗 Is dark blue on white easy or hard to read on a button? (a) hard to read (b) easy to read
  37. 37.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 56 px tall
    Send button: 24 px tall
    Back button: 48 px tall     (a) Back (b) Cancel (c) Send
  38. 38.🌗 Is light grey on white easy or hard to read on a button? (a) hard to read (b) easy to read
  39. 39.Which colour pair is easy to read? (a) dark blue on black (b) light grey on white (c) yellow on white (d) dark blue on white
  40. 40.True or false: buttons almost touching is poor button design. (a) False (b) True

Answer key

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

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