← Buttons: size and contrast lesson New set →

App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 94 · 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.🔘 Is this good or poor button design: space between buttons? (a) good design (b) poor design
  2. 2.Which colour pair is hard to read? (a) black on pale grey (b) white on dark green (c) light grey on white (d) white on black
  3. 3.🌗 Is white on black easy or hard to read on a button? (a) easy to read (b) hard to read
  4. 4.🌗 Is yellow on white easy or hard to read on a button? (a) hard to read (b) easy to read
  5. 5.Which colour pair is easy to read? (a) pale pink on white (b) red on green (c) black on yellow (d) yellow on white
  6. 6.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 64 px tall
    Save button: 52 px tall
    Done button: 40 px tall     (a) Done (b) Save (c) Next
  7. 7.🌗 Is white on dark green easy or hard to read on a button? (a) easy to read (b) hard to read
  8. 8.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 72 px tall
    Done button: 40 px tall
    Start button: 72 px tall
    Help button: 60 px tall     (a) Done (b) Help (c) Cancel (d) Start
  9. 9.🔘 Is this good or poor button design: grey text on grey? (a) poor design (b) good design
  10. 10.True or false: a tiny 20 px button is poor button design. (a) False (b) True
  11. 11.True or false: strong colour contrast is poor button design. (a) False (b) True
  12. 12.🔘 Is this good or poor button design: a tiny 20 px button? (a) poor design (b) good design
  13. 13.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 40 px tall
    Send button: 48 px tall
    Back button: 48 px tall     (a) Start (b) Back (c) Send
  14. 14.True or false: a big, easy tap area is good button design. (a) True (b) False
  15. 15.Which colour pair is easy to read? (a) black on pale grey (b) light grey on white (c) yellow on white (d) red on green
  16. 16.Which colour pair is easy to read? (a) yellow on white (b) red on green (c) pale pink on white (d) dark blue on white
  17. 17.🔘 Is this good or poor button design: icons with no meaning? (a) good design (b) poor design
  18. 18.Which colour pair is easy to read? (a) red on green (b) light grey on white (c) white on dark green (d) pale pink on white
  19. 19.True or false: grey text on grey is poor button design. (a) False (b) True
  20. 20.🔘 Is this good or poor button design: strong colour contrast? (a) poor design (b) good design
  21. 21.🔘 Our rule: buttons are at least 48 px tall. The Help button is 44 px tall. How many px taller must it be?
  22. 22.Which colour pair is hard to read? (a) black on yellow (b) red on green (c) black on pale grey (d) white on dark green
  23. 23.🌗 Is black on pale grey easy or hard to read on a button? (a) hard to read (b) easy to read
  24. 24.🔘 Our rule: buttons are at least 48 px tall. The Send button is 28 px tall. How many px taller must it be?
  25. 25.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 56 px tall
    Back button: 36 px tall
    Done button: 44 px tall
  26. 26.True or false: icons with no meaning is poor button design. (a) False (b) True
  27. 27.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 52 px tall
    Save button: 36 px tall
    Help button: 72 px tall     (a) Save (b) Help (c) Next
  28. 28.True or false: space between buttons is poor button design. (a) False (b) True
  29. 29.True or false: a tiny 20 px button is good button design. (a) False (b) True
  30. 30.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
  31. 31.🌗 Is dark blue on black easy or hard to read on a button? (a) hard to read (b) easy to read
  32. 32.🔘 Our rule: buttons are at least 48 px tall. The Next button is 32 px tall. How many px taller must it be?
  33. 33.True or false: a big, easy tap area is poor button design. (a) False (b) True
  34. 34.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 24 px tall. How many px taller must it be?
  35. 35.🌗 Is dark blue on white easy or hard to read on a button? (a) easy to read (b) hard to read
  36. 36.🌗 Is red on green easy or hard to read on a button? (a) easy to read (b) hard to read
  37. 37.Which colour pair is hard to read? (a) black on yellow (b) black on pale grey (c) dark blue on white (d) pale pink on white
  38. 38.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 20 px tall. How many px taller must it be?
  39. 39.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 60 px tall
    Done button: 60 px tall
    Send button: 60 px tall
  40. 40.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 44 px tall
    Send button: 56 px tall
    Next button: 44 px tall
    Help button: 44 px tall

Answer key

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

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