App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 515 · 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.True or false: buttons almost touching is poor button design. (a) False (b) True
2. 2.Which colour pair is easy to read? (a) dark blue on white (b) light grey on white (c) yellow on white (d) dark blue on black
3. 3.True or false: a clear word like Save is good button design. (a) False (b) True
4. 4.🔘 Is this good or poor button design: space between buttons? (a) poor design (b) good design
5. 5.🌗 Is white on dark green easy or hard to read on a button? (a) easy to read (b) hard to read
6. 6.True or false: space between buttons is poor button design. (a) False (b) True
7. 7.True or false: a big, easy tap area is poor button design. (a) False (b) True
8. 8.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
9. 9.True or false: buttons almost touching is good button design. (a) False (b) True
10. 10.🔘 Is this good or poor button design: grey text on grey? (a) good design (b) poor design
11. 11.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 52 px tall
    Back button: 68 px tall
    Next button: 32 px tall
    Save button: 64 px tall (a) Save (b) Back (c) Next (d) Cancel
12. 12.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Done button: 28 px tall
    Help button: 52 px tall
    Save button: 60 px tall (a) Save (b) Help (c) Done
13. 13.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Send button: 60 px tall
    Cancel button: 40 px tall
    Save button: 64 px tall
14. 14.🔘 Is this good or poor button design: strong colour contrast? (a) good design (b) poor design
15. 15.True or false: icons with no meaning is good button design. (a) False (b) True
16. 16.Which colour pair is easy to read? (a) yellow on white (b) red on green (c) white on black (d) pale pink on white
17. 17.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
18. 18.🔘 Our rule: buttons are at least 48 px tall. The Send button is 44 px tall. How many px taller must it be?
19. 19.🌗 Is white on black easy or hard to read on a button? (a) hard to read (b) easy to read
20. 20.🔘 Our rule: buttons are at least 48 px tall. The Next button is 44 px tall. How many px taller must it be?
21. 21.Which colour pair is hard to read? (a) yellow on white (b) black on pale grey (c) white on black (d) black on yellow
22. 22.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 68 px tall
    Next button: 48 px tall
    Start button: 24 px tall
    Help button: 48 px tall (a) Save (b) Start (c) Help (d) Next
23. 23.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Cancel button: 44 px tall
    Start button: 36 px tall
    Done button: 52 px tall
24. 24.🔘 Is this good or poor button design: a big, easy tap area? (a) poor design (b) good design
25. 25.True or false: strong colour contrast is poor button design. (a) True (b) False
26. 26.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 64 px tall
    Save button: 68 px tall
    Start button: 28 px tall (a) Cancel (b) Save (c) Start
27. 27.Which colour pair is hard to read? (a) black on pale grey (b) dark blue on white (c) red on green (d) white on black
28. 28.🔘 Is this good or poor button design: buttons almost touching? (a) good design (b) poor design
29. 29.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 52 px tall
    Save button: 44 px tall
    Help button: 72 px tall
    Back button: 52 px tall (a) Help (b) Back (c) Next (d) Save
30. 30.Which colour pair is hard to read? (a) black on pale grey (b) white on black (c) light grey on white (d) dark blue on white
31. 31.🔘 Our rule: buttons are at least 48 px tall. The Back button is 28 px tall. How many px taller must it be?
32. 32.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Help button: 68 px tall
    Cancel button: 60 px tall
    Done button: 52 px tall
    Save button: 44 px tall (a) Save (b) Done (c) Cancel (d) Help
33. 33.🔘 Is this good or poor button design: icons with no meaning? (a) good design (b) poor design
34. 34.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Back button: 44 px tall
    Next button: 64 px tall
    Save button: 44 px tall
    Done button: 56 px tall
35. 35.🌗 Is dark blue on white easy or hard to read on a button? (a) hard to read (b) easy to read
36. 36.Which colour pair is hard to read? (a) dark blue on black (b) white on black (c) dark blue on white (d) black on pale grey
37. 37.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 28 px tall
    Done button: 56 px tall
    Next button: 52 px tall (a) Done (b) Next (c) Cancel
38. 38.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 32 px tall
    Start button: 56 px tall
    Help button: 48 px tall (a) Start (b) Help (c) Send
39. 39.🌗 Is pale pink on white easy or hard to read on a button? (a) hard to read (b) easy to read
40. 40.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 64 px tall
    Start button: 44 px tall
    Help button: 72 px tall (a) Send (b) Help (c) Start

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