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App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 534 · 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) good design (b) poor design
  2. 2.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 36 px tall
    Next button: 44 px tall
    Cancel button: 56 px tall
  3. 3.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
  4. 4.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 64 px tall
    Send button: 52 px tall
    Done button: 40 px tall     (a) Done (b) Send (c) Save
  5. 5.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 72 px tall
    Help button: 40 px tall
    Cancel button: 48 px tall
    Back button: 52 px tall     (a) Back (b) Help (c) Cancel (d) Save
  6. 6.Which colour pair is hard to read? (a) dark blue on white (b) black on pale grey (c) light grey on white (d) black on yellow
  7. 7.Which colour pair is easy to read? (a) white on black (b) light grey on white (c) dark blue on black (d) yellow on white
  8. 8.True or false: a big, easy tap area is good button design. (a) False (b) True
  9. 9.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 68 px tall
    Next button: 36 px tall
    Done button: 68 px tall
    Save button: 48 px tall     (a) Back (b) Save (c) Next (d) Done
  10. 10.🌗 Is black on pale grey easy or hard to read on a button? (a) easy to read (b) hard to read
  11. 11.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 60 px tall
    Start button: 52 px tall
    Done button: 24 px tall     (a) Send (b) Done (c) Start
  12. 12.Which colour pair is hard to read? (a) white on dark green (b) dark blue on black (c) dark blue on white (d) white on black
  13. 13.True or false: space between buttons is good button design. (a) False (b) True
  14. 14.True or false: buttons almost touching is poor button design. (a) False (b) True
  15. 15.🌗 Is light grey on white easy or hard to read on a button? (a) hard to read (b) easy to read
  16. 16.🌗 Is dark blue on black easy or hard to read on a button? (a) hard to read (b) easy to read
  17. 17.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 48 px tall
    Save button: 32 px tall
    Back button: 56 px tall     (a) Save (b) Help (c) Back
  18. 18.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
  19. 19.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 44 px tall
    Back button: 56 px tall
    Help button: 56 px tall
  20. 20.True or false: grey text on grey is good button design. (a) False (b) True
  21. 21.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 60 px tall
    Next button: 56 px tall
    Start button: 24 px tall
    Back button: 52 px tall     (a) Back (b) Save (c) Next (d) Start
  22. 22.🔘 Is this good or poor button design: grey text on grey? (a) poor design (b) good design
  23. 23.🔘 Is this good or poor button design: buttons almost touching? (a) good design (b) poor design
  24. 24.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 40 px tall
    Next button: 52 px tall
    Done button: 32 px tall
    Help button: 44 px tall
  25. 25.Which colour pair is easy to read? (a) dark blue on black (b) white on dark green (c) pale pink on white (d) yellow on white
  26. 26.Which colour pair is easy to read? (a) light grey on white (b) black on pale grey (c) red on green (d) yellow on white
  27. 27.True or false: a tiny 20 px button is poor button design. (a) True (b) False
  28. 28.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 60 px tall
    Cancel button: 44 px tall
    Help button: 60 px tall
    Send button: 56 px tall
  29. 29.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 56 px tall
    Start button: 44 px tall
    Done button: 36 px tall
    Next button: 52 px tall
  30. 30.🔘 Is this good or poor button design: a tiny 20 px button? (a) poor design (b) good design
  31. 31.🌗 Is pale pink on white easy or hard to read on a button? (a) easy to read (b) hard to read
  32. 32.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 52 px tall
    Cancel button: 36 px tall
    Back button: 64 px tall     (a) Back (b) Send (c) Cancel
  33. 33.🌗 Is red on green easy or hard to read on a button? (a) easy to read (b) hard to read
  34. 34.Which colour pair is hard to read? (a) black on pale grey (b) black on yellow (c) red on green (d) dark blue on white
  35. 35.🌗 Is dark blue on white easy or hard to read on a button? (a) hard to read (b) easy to read
  36. 36.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 68 px tall
    Start button: 56 px tall
    Help button: 32 px tall     (a) Start (b) Help (c) Done
  37. 37.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 24 px tall
    Done button: 72 px tall
    Save button: 72 px tall     (a) Send (b) Save (c) Done
  38. 38.Which colour pair is easy to read? (a) yellow on white (b) pale pink on white (c) light grey on white (d) dark blue on white
  39. 39.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 48 px tall
    Send button: 68 px tall
    Back button: 24 px tall
    Next button: 64 px tall     (a) Next (b) Back (c) Send (d) Save
  40. 40.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 36 px tall
    Done button: 72 px tall
    Next button: 68 px tall
    Cancel button: 64 px tall     (a) Cancel (b) Save (c) Next (d) Done

Answer key

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

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