App Dev Worksheet: Button Size and Contrast

App development lesson 12: Buttons: size and contrast · Set 332 · 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: space between buttons is poor button design. (a) True (b) False
2. 2.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 36 px tall. How many px taller must it be?
3. 3.🔘 Is this good or poor button design: strong colour contrast? (a) poor design (b) good design
4. 4.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
   Back button: 64 px tall
   Help button: 64 px tall
   Cancel button: 48 px tall
   Save button: 36 px tall
5. 5.True or false: a clear word like Save is poor button design. (a) True (b) False
6. 6.🌗 Is red on green easy or hard to read on a button? (a) easy to read (b) hard to read
7. 7.🌗 Is pale pink on white easy or hard to read on a button? (a) easy to read (b) hard to read
8. 8.🌗 Is dark blue on white easy or hard to read on a button? (a) easy to read (b) hard to read
9. 9.🌗 Is dark blue on black easy or hard to read on a button? (a) easy to read (b) hard to read
10. 10.Which colour pair is easy to read? (a) white on dark green (b) dark blue on black (c) light grey on white (d) pale pink on white
11. 11.🔘 Is this good or poor button design: buttons almost touching? (a) good design (b) poor design
12. 12.Which colour pair is easy to read? (a) red on green (b) yellow on white (c) black on pale grey (d) pale pink on white
13. 13.True or false: strong colour contrast is good button design. (a) True (b) False
14. 14.True or false: buttons almost touching is good button design. (a) False (b) True
15. 15.Which colour pair is hard to read? (a) black on yellow (b) black on pale grey (c) dark blue on black (d) dark blue on white
16. 16.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Start button: 56 px tall
    Send button: 60 px tall
    Help button: 32 px tall
17. 17.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Send button: 44 px tall
    Help button: 52 px tall
    Save button: 72 px tall
    Cancel button: 68 px tall (a) Cancel (b) Save (c) Help (d) Send
18. 18.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 32 px tall
    Help button: 56 px tall
    Next button: 40 px tall
    Start button: 56 px tall
19. 19.🔘 Our rule: buttons are at least 48 px tall. How many of these buttons follow the rule?
    Save button: 36 px tall
    Start button: 32 px tall
    Help button: 40 px tall
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. The Send button is 28 px tall. How many px taller must it be?
22. 22.🔘 Is this good or poor button design: icons with no meaning? (a) poor design (b) good design
23. 23.Which colour pair is hard to read? (a) yellow on white (b) white on dark green (c) white on black (d) black on pale grey
24. 24.🌗 Is white on black easy or hard to read on a button? (a) easy to read (b) hard to read
25. 25.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 24 px tall. How many px taller must it be?
26. 26.🔘 Our rule: buttons are at least 48 px tall. The Cancel button is 20 px tall. How many px taller must it be?
27. 27.True or false: a tiny 20 px button is good button design. (a) False (b) True
28. 28.True or false: grey text on grey is good button design. (a) False (b) True
29. 29.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
30. 30.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Save button: 48 px tall
    Help button: 40 px tall
    Done button: 48 px tall
    Cancel button: 52 px tall (a) Cancel (b) Help (c) Done (d) Save
31. 31.True or false: a big, easy tap area is poor button design. (a) True (b) False
32. 32.Which colour pair is easy to read? (a) pale pink on white (b) dark blue on white (c) dark blue on black (d) red on green
33. 33.🌗 Is light grey on white easy or hard to read on a button? (a) hard to read (b) easy to read
34. 34.Which colour pair is hard to read? (a) black on pale grey (b) dark blue on white (c) light grey on white (d) white on dark green
35. 35.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Start button: 72 px tall
    Save button: 48 px tall
    Cancel button: 72 px tall
    Help button: 44 px tall (a) Save (b) Start (c) Cancel (d) Help
36. 36.🔘 Our rule: buttons are at least 48 px tall. The Back button is 36 px tall. How many px taller must it be?
37. 37.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Cancel button: 64 px tall
    Next button: 36 px tall
    Send button: 52 px tall (a) Cancel (b) Send (c) Next
38. 38.🔘 Is this good or poor button design: space between buttons? (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?
    Start button: 52 px tall
    Save button: 32 px tall
    Done button: 56 px tall
    Back button: 56 px tall
40. 40.🔘 Our rule: buttons are at least 48 px tall. Which button is too small?
    Next button: 52 px tall
    Done button: 40 px tall
    Save button: 52 px tall (a) Next (b) Save (c) Done

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