App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 596 · 40 questions

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.

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

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