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App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 290 · 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: buttons almost touching? (a) good design (b) poor design
  2. 2.Which colour pair is easy to read? (a) light grey on white (b) yellow on white (c) black on yellow (d) pale pink on white
  3. 3.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
  4. 4.🌗 Is white on black easy or hard to read on a button? (a) hard to read (b) easy to read
  5. 5.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 40 px tall
    Done button: 64 px tall
    Send button: 64 px tall
    Save button: 52 px tall
  6. 6.True or false: a tiny 20 px button is good button design. (a) False (b) True
  7. 7.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 44 px tall
    Done button: 48 px tall
    Cancel button: 48 px tall     (a) Done (b) Cancel (c) Next
  8. 8.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 40 px tall. How many px taller must it be?
  9. 9.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 52 px tall
    Back button: 40 px tall
    Start button: 32 px tall
    Save button: 60 px tall
  10. 10.🔘 Is this good or poor button design: grey text on grey? (a) good design (b) poor design
  11. 11.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 52 px tall
    Help button: 40 px tall
    Send button: 52 px tall
    Cancel button: 48 px tall     (a) Cancel (b) Next (c) Send (d) Help
  12. 12.🌗 Is black on pale grey easy or hard to read on a button? (a) hard to read (b) easy to read
  13. 13.🔘 Is this good or poor button design: a big, easy tap area? (a) good design (b) poor design
  14. 14.True or false: a big, easy tap area is good button design. (a) False (b) True
  15. 15.Which colour pair is hard to read? (a) white on dark green (b) pale pink on white (c) black on pale grey (d) white on black
  16. 16.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 44 px tall
    Next button: 68 px tall
    Back button: 48 px tall
    Send button: 64 px tall     (a) Back (b) Send (c) Next (d) Save
  17. 17.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 24 px tall
    Save button: 64 px tall
    Cancel button: 64 px tall     (a) Save (b) Done (c) Cancel
  18. 18.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 60 px tall
    Back button: 36 px tall
    Send button: 68 px tall
    Done button: 72 px tall     (a) Send (b) Help (c) Done (d) Back
  19. 19.True or false: grey text on grey is poor button design. (a) False (b) True
  20. 20.True or false: strong colour contrast is poor button design. (a) False (b) True
  21. 21.🔘 Our rule: buttons are at least 48 px tall. The Send button is 32 px tall. How many px taller must it be?
  22. 22.🌗 Is red on green easy or hard to read on a button? (a) easy to read (b) hard to read
  23. 23.True or false: a big, easy tap area is poor button design. (a) False (b) True
  24. 24.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Done button: 32 px tall
    Help button: 60 px tall
    Start button: 52 px tall
    Next button: 52 px tall
  25. 25.True or false: icons with no meaning is good button design. (a) True (b) False
  26. 26.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 64 px tall
    Next button: 64 px tall
    Start button: 44 px tall
    Send button: 52 px tall     (a) Start (b) Send (c) Done (d) Next
  27. 27.True or false: space between buttons is good button design. (a) False (b) True
  28. 28.🌗 Is pale pink on white easy or hard to read on a button? (a) easy to read (b) hard to read
  29. 29.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 56 px tall
    Help button: 36 px tall
    Cancel button: 32 px tall
    Done button: 36 px tall
  30. 30.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 56 px tall
    Cancel button: 40 px tall
    Start button: 40 px tall
  31. 31.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 52 px tall
    Back button: 52 px tall
    Send button: 36 px tall     (a) Send (b) Back (c) Save
  32. 32.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
  33. 33.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 60 px tall
    Done button: 32 px tall
    Help button: 40 px tall
    Save button: 32 px tall
  34. 34.Which colour pair is easy to read? (a) red on green (b) dark blue on white (c) pale pink on white (d) light grey on white
  35. 35.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Back button: 68 px tall
    Next button: 48 px tall
    Done button: 56 px tall
    Help button: 40 px tall     (a) Back (b) Next (c) Help (d) Done
  36. 36.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
  37. 37.🔘 Is this good or poor button design: a tiny 20 px button? (a) poor design (b) good design
  38. 38.🔘 Is this good or poor button design: icons with no meaning? (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?
    Send button: 56 px tall
    Save button: 40 px tall
    Next button: 40 px tall
    Start button: 40 px tall
  40. 40.🌗 Is yellow on white easy or hard to read on a button? (a) hard to read (b) easy to read

Answer key

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

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