← Buttons: size and contrast lesson New set →

App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 376 · 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.

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

Answer key

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

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students