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App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 589 · 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 yellow on white easy or hard to read on a button? (a) hard to read (b) easy to read
  2. 2.True or false: space between buttons is poor button design. (a) False (b) True
  3. 3.True or false: a clear word like Save is poor button design. (a) False (b) True
  4. 4.🔘 Is this good or poor button design: icons with no meaning? (a) poor design (b) good design
  5. 5.Which colour pair is easy to read? (a) light grey on white (b) dark blue on white (c) yellow on white (d) pale pink on white
  6. 6.🔘 Our rule: buttons are at least 48 px tall. The Back button is 24 px tall. How many px taller must it be?
  7. 7.Which colour pair is hard to read? (a) yellow on white (b) black on pale grey (c) black on yellow (d) dark blue on white
  8. 8.🌗 Is pale pink on white easy or hard to read on a button? (a) hard to read (b) easy to read
  9. 9.🔘 Our rule: buttons are at least 48 px tall. The Back button is 32 px tall. How many px taller must it be?
  10. 10.Which colour pair is easy to read? (a) dark blue on black (b) red on green (c) pale pink on white (d) black on pale grey
  11. 11.Which colour pair is easy to read? (a) dark blue on black (b) pale pink on white (c) black on yellow (d) yellow on white
  12. 12.True or false: buttons almost touching is poor button design. (a) True (b) False
  13. 13.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 64 px tall
    Back button: 72 px tall
    Start button: 44 px tall
    Done button: 48 px tall     (a) Save (b) Back (c) Done (d) Start
  14. 14.True or false: strong colour contrast is poor button design. (a) True (b) False
  15. 15.🌗 Is dark blue on white easy or hard to read on a button? (a) easy to read (b) hard to read
  16. 16.🔘 Our rule: buttons are at least 48 px tall. The Start button is 28 px tall. How many px taller must it be?
  17. 17.True or false: strong colour contrast is good button design. (a) False (b) True
  18. 18.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 32 px tall
    Start button: 36 px tall
    Save button: 64 px tall
    Help button: 40 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
    Start button: 60 px tall
    Next button: 52 px tall
  20. 20.🔘 Is this good or poor button design: grey text on grey? (a) good design (b) poor design
  21. 21.True or false: a big, easy tap area is poor button design. (a) True (b) False
  22. 22.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 56 px tall
    Save button: 48 px tall
    Help button: 28 px tall
    Cancel button: 52 px tall     (a) Cancel (b) Send (c) Save (d) Help
  23. 23.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 60 px tall
    Next button: 32 px tall
    Save button: 64 px tall
    Send button: 44 px tall
  24. 24.Which colour pair is hard to read? (a) black on yellow (b) white on black (c) pale pink on white (d) black on pale grey
  25. 25.True or false: grey text on grey is poor button design. (a) False (b) True
  26. 26.🌗 Is black on pale grey easy or hard to read on a button? (a) hard to read (b) easy to read
  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.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
  29. 29.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 40 px tall
    Send button: 48 px tall
    Back button: 56 px tall
  30. 30.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 52 px tall
    Send button: 32 px tall
    Next button: 36 px tall
    Cancel button: 36 px tall
  31. 31.True or false: icons with no meaning is poor button design. (a) False (b) True
  32. 32.True or false: space between buttons is good button design. (a) False (b) True
  33. 33.Which colour pair is easy to read? (a) yellow on white (b) red on green (c) light grey on white (d) white on black
  34. 34.🔘 Our rule: buttons are at least 48 px tall. The Next button is 28 px tall. How many px taller must it be?
  35. 35.🔘 Is this good or poor button design: buttons almost touching? (a) poor design (b) good design
  36. 36.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
  37. 37.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 52 px tall
    Done button: 40 px tall
    Help button: 72 px tall     (a) Done (b) Help (c) Back
  38. 38.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 56 px tall
    Save button: 56 px tall
    Help button: 40 px tall
  39. 39.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 52 px tall
    Send button: 60 px tall
    Save button: 44 px tall
  40. 40.True or false: buttons almost touching is good button design. (a) True (b) False

Answer key

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

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