App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 255 · 40 questions

Developer's tip (Design for everyone): Our rule: text is at least 16 px; every icon has a text label for screen readers. Add captions to videos; never use colour as the only clue. Big touch targets and strong contrast help everyone.

1. 1.♿ A screen has 12 icon buttons. Only 10 of them have a text label for screen readers. How many still need a label?
2. 2.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Title: 19 px
   Hint: 12 px
   Caption: 10 px
   Footer: 19 px
3. 3.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Label: 14 px
   Title: 23 px
   Hint: 10 px
   Body text: 18 px
   Caption: 10 px
4. 4.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 14 px
   Hint: 28 px
   Footer: 16 px (a) Title (b) Hint (c) Footer
5. 5.Which of these makes the app harder to use? (a) big touch targets (b) text that can grow (c) strong colour contrast (d) colour as the only clue
6. 6.🔍 Which is the odd one out? (a) text that can grow (b) sudden loud sounds (c) strong colour contrast (d) big touch targets
7. 7.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
8. 8.Which of these helps everyone use the app? (a) icons with no labels (b) sudden loud sounds (c) colour as the only clue (d) big touch targets
9. 9.♿ Showing right or wrong only in red and green is a problem for ___. (a) the server (b) the battery (c) colour-blind users (d) fast typists
10. 10.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 23 px
    Hint: 10 px
    Body text: 16 px
11. 11.🔍 Which is the odd one out? (a) sudden loud sounds (b) colour as the only clue (c) text that can grow (d) tiny tap areas
12. 12.Which of these helps everyone use the app? (a) icons with no labels (b) tiny tap areas (c) sudden loud sounds (d) text that can grow
13. 13.Which of these makes the app harder to use? (a) captions on videos (b) big touch targets (c) text that can grow (d) tiny tap areas
14. 14.True or false: “text that can grow” helps everyone use the app. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) captions on videos (b) labels on every icon (c) icons with no labels (d) text that can grow
16. 16.🔍 Which is the odd one out? (a) labels on every icon (b) captions on videos (c) fast-flashing lights (d) text that can grow
17. 17.♿ What does a screen reader do? (a) makes text tiny (b) takes photos (c) reads the screen aloud (d) plays music
18. 18.🔍 Which is the odd one out? (a) tiny tap areas (b) strong colour contrast (c) colour as the only clue (d) sudden loud sounds
19. 19.Which of these makes the app harder to use? (a) text that can grow (b) captions on videos (c) icons with no labels (d) strong colour contrast
20. 20.♿ A screen has 7 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
21. 21.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 17 px
    Caption: 11 px
    Body text: 24 px
22. 22.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 24 px
    Hint: 16 px
    Label: 20 px
    Footer: 13 px
23. 23.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
24. 24.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
25. 25.True or false: “labels on every icon” helps everyone use the app. (a) True (b) False
26. 26.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 21 px
    Title: 16 px
    Menu: 12 px
    Body text: 19 px
    Hint: 15 px
27. 27.♿ A screen has 8 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
28. 28.♿ What should every icon-only button have for screen readers? (a) a sound (b) a bright colour (c) a long animation (d) a text label
29. 29.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 22 px
    Footer: 19 px
    Body text: 14 px
30. 30.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 22 px
    Label: 12 px
    Caption: 11 px
    Hint: 12 px
    Menu: 20 px
31. 31.True or false: “colour as the only clue” helps everyone use the app. (a) False (b) True
32. 32.True or false: “labels on every icon” makes the app harder to use. (a) False (b) True
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 23 px
    Body text: 19 px
    Title: 19 px
34. 34.♿ A screen has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
35. 35.True or false: “captions on videos” makes the app harder to use. (a) False (b) True
36. 36.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 21 px
    Caption: 16 px
    Menu: 11 px
    Title: 19 px
    Body text: 17 px
37. 37.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 13 px
    Label: 17 px
    Menu: 24 px
    Footer: 16 px
    Body text: 17 px (a) Label (b) Footer (c) Menu (d) Caption
38. 38.♿ A screen has 5 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 16 px
    Footer: 9 px
    Hint: 16 px
    Label: 25 px (a) Label (b) Footer (c) Hint (d) Title
40. 40.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 12 px
    Hint: 12 px
    Body text: 22 px

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