← Buttons: size and contrast lesson New set →

App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 337 · 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.🔘 Our rule: buttons are at least 48 px tall. The Done button is 44 px tall. How many px taller must it be?
  2. 2.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
  3. 3.🔘 Our rule: buttons are at least 48 px tall. The Back button is 40 px tall. How many px taller must it be?
  4. 4.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 68 px tall
    Save button: 72 px tall
    Done button: 40 px tall
    Send button: 52 px tall     (a) Next (b) Save (c) Send (d) Done
  5. 5.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 60 px tall
    Back button: 64 px tall
    Save button: 32 px tall
    Cancel button: 48 px tall
  6. 6.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 60 px tall
    Back button: 40 px tall
    Help button: 72 px tall     (a) Cancel (b) Back (c) Help
  7. 7.🌗 Is black on yellow 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. How many of these buttons follow the rule?
    Save button: 52 px tall
    Help button: 36 px tall
    Cancel button: 40 px tall
    Next button: 52 px tall
  9. 9.🔘 Is this good or poor button design: a clear word like Save? (a) poor design (b) good design
  10. 10.Which colour pair is hard to read? (a) black on yellow (b) pale pink on white (c) white on black (d) white on dark green
  11. 11.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
  12. 12.True or false: a clear word like Save is poor button design. (a) False (b) True
  13. 13.Which colour pair is easy to read? (a) black on yellow (b) pale pink on white (c) light grey on white (d) red on green
  14. 14.🔘 Our rule: buttons are at least 48 px tall. The Send button is 32 px tall. How many px taller must it be?
  15. 15.🌗 Is white on black easy or hard to read on a button? (a) easy to read (b) hard to read
  16. 16.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 40 px tall
    Done button: 44 px tall
    Cancel button: 40 px tall
    Send button: 44 px tall
  17. 17.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 64 px tall
    Start button: 24 px tall
    Save button: 60 px tall
    Done button: 64 px tall     (a) Start (b) Help (c) Done (d) Save
  18. 18.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 64 px tall
    Save button: 32 px tall
    Send button: 56 px tall
    Help button: 48 px tall
  19. 19.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 40 px tall
    Back button: 52 px tall
    Next button: 56 px tall     (a) Save (b) Next (c) Back
  20. 20.🔘 Our rule: buttons are at least 48 px tall. The Save button is 24 px tall. How many px taller must it be?
  21. 21.🔘 Our rule: buttons are at least 48 px tall. The Help button is 40 px tall. How many px taller must it be?
  22. 22.🔘 Is this good or poor button design: grey text on grey? (a) good design (b) poor design
  23. 23.True or false: strong colour contrast is poor button design. (a) True (b) False
  24. 24.🔘 Is this good or poor button design: a tiny 20 px button? (a) poor design (b) good design
  25. 25.🔘 Our rule: buttons are at least 48 px tall. The Next button is 28 px tall. How many px taller must it be?
  26. 26.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 48 px tall
    Cancel button: 32 px tall
    Next button: 72 px tall     (a) Next (b) Cancel (c) Help
  27. 27.🔘 Our rule: buttons are at least 48 px tall. The Done button is 40 px tall. How many px taller must it be?
  28. 28.🌗 Is light grey on white easy or hard to read on a button? (a) easy to read (b) hard to read
  29. 29.🔘 Is this good or poor button design: strong colour contrast? (a) poor design (b) good design
  30. 30.🔘 Our rule: buttons are at least 48 px tall. The Back button is 36 px tall. How many px taller must it be?
  31. 31.🌗 Is white on dark 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. The Send button is 20 px tall. How many px taller must it be?
  33. 33.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 36 px tall
    Save button: 64 px tall
    Cancel button: 64 px tall
  34. 34.Which colour pair is easy to read? (a) pale pink on white (b) black on pale grey (c) light grey on white (d) yellow on white
  35. 35.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Help button: 44 px tall
    Cancel button: 32 px tall
    Back button: 40 px tall
  36. 36.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 40 px tall
    Done button: 60 px tall
    Back button: 44 px tall
    Save button: 40 px tall
  37. 37.🔘 Our rule: buttons are at least 48 px tall. The Back button is 24 px tall. How many px taller must it be?
  38. 38.🌗 Is pale pink on white easy or hard to read on a button? (a) hard to read (b) easy to read
  39. 39.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 68 px tall
    Done button: 28 px tall
    Help button: 68 px tall
    Cancel button: 72 px tall     (a) Save (b) Help (c) Done (d) Cancel
  40. 40.True or false: icons with no meaning is good button design. (a) False (b) True

Answer key

  1. 4
  2. good design
  3. 8
  4. Done
  5. 3
  6. Back
  7. easy to read
  8. 2
  9. good design
  10. pale pink on white
  11. good design
  12. False
  13. black on yellow
  14. 16
  15. easy to read
  16. 0
  17. Start
  18. 3
  19. Save
  20. 24
  21. 8
  22. poor design
  23. False
  24. poor design
  25. 20
  26. Cancel
  27. 8
  28. hard to read
  29. good design
  30. 12
  31. easy to read
  32. 28
  33. 2
  34. black on pale grey
  35. 0
  36. 1
  37. 24
  38. hard to read
  39. Done
  40. False

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