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App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 494 · 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: buttons almost touching is poor button design. (a) True (b) False
  2. 2.Which colour pair is hard to read? (a) dark blue on white (b) black on yellow (c) light grey on white (d) white on black
  3. 3.🌗 Is dark blue on black easy or hard to read on a button? (a) easy to read (b) hard to read
  4. 4.Which colour pair is hard to read? (a) white on black (b) white on dark green (c) red on green (d) black on yellow
  5. 5.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 32 px tall
    Next button: 52 px tall
    Cancel button: 68 px tall     (a) Cancel (b) Next (c) Start
  6. 6.Which colour pair is hard to read? (a) black on pale grey (b) pale pink on white (c) white on black (d) black on yellow
  7. 7.🌗 Is black on pale grey easy or hard to read on a button? (a) hard to read (b) easy to read
  8. 8.True or false: grey text on grey is good button design. (a) False (b) True
  9. 9.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 36 px tall
    Done button: 64 px tall
    Back button: 32 px tall
    Help button: 32 px tall
  10. 10.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 48 px tall
    Start button: 64 px tall
    Done button: 40 px tall
    Send button: 36 px tall
  11. 11.🔘 Is this good or poor button design: icons with no meaning? (a) good design (b) poor design
  12. 12.True or false: grey text on grey 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: 72 px tall
    Done button: 56 px tall
    Next button: 60 px tall
    Cancel button: 44 px tall     (a) Cancel (b) Done (c) Save (d) Next
  14. 14.🔘 Our rule: buttons are at least 48 px tall. The Save button is 28 px tall. How many px taller must it be?
  15. 15.🔘 Is this good or poor button design: buttons almost touching? (a) good design (b) poor design
  16. 16.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 24 px tall. How many px taller must it be?
  17. 17.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 32 px tall
    Start button: 72 px tall
    Save button: 56 px tall     (a) Save (b) Start (c) Help
  18. 18.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 40 px tall
    Back button: 64 px tall
    Cancel button: 36 px tall
  19. 19.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 56 px tall
    Cancel button: 48 px tall
    Back button: 24 px tall     (a) Back (b) Cancel (c) Next
  20. 20.Which colour pair is hard to read? (a) black on pale grey (b) white on dark green (c) dark blue on black (d) white on black
  21. 21.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 56 px tall
    Save button: 32 px tall
    Next button: 64 px tall     (a) Next (b) Save (c) Done
  22. 22.Which colour pair is easy to read? (a) pale pink on white (b) yellow on white (c) dark blue on white (d) light grey on white
  23. 23.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
  24. 24.True or false: buttons almost touching is good button design. (a) True (b) False
  25. 25.True or false: strong colour contrast is good button design. (a) False (b) True
  26. 26.Which colour pair is easy to read? (a) pale pink on white (b) red on green (c) black on yellow (d) light grey on white
  27. 27.True or false: a big, easy tap area is good button design. (a) False (b) True
  28. 28.True or false: icons with no meaning is poor button design. (a) True (b) False
  29. 29.🔘 Our rule: buttons are at least 48 px tall. The Send button is 44 px tall. How many px taller must it be?
  30. 30.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
  31. 31.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Next button: 60 px tall
    Done button: 52 px tall
    Send button: 44 px tall
  32. 32.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 56 px tall
    Start button: 52 px tall
    Cancel button: 60 px tall
    Done button: 24 px tall     (a) Send (b) Start (c) Done (d) Cancel
  33. 33.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 36 px tall
    Cancel button: 68 px tall
    Start button: 60 px tall
    Send button: 48 px tall     (a) Cancel (b) Start (c) Send (d) Help
  34. 34.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
  35. 35.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 44 px tall
    Help button: 48 px tall
    Back button: 36 px tall
    Send button: 64 px tall
  36. 36.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 56 px tall
    Done button: 40 px tall
    Save button: 44 px tall
  37. 37.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 68 px tall
    Help button: 60 px tall
    Save button: 48 px tall
    Done button: 28 px tall     (a) Next (b) Help (c) Save (d) Done
  38. 38.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 52 px tall
    Back button: 32 px tall
    Send button: 60 px tall     (a) Help (b) Send (c) Back
  39. 39.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 32 px tall
    Send button: 32 px tall
    Done button: 64 px tall
  40. 40.🌗 Is red on green easy or hard to read on a button? (a) hard to read (b) easy to read

Answer key

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

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