App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 494 · 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.♿ Accessibility means an app works for ___. (a) everyone (b) nobody (c) only the coder (d) only experts
2. 2.♿ Showing right or wrong only in red and green is a problem for ___. (a) fast typists (b) the server (c) colour-blind users (d) the battery
3. 3.🔍 Which is the odd one out? (a) strong colour contrast (b) text that can grow (c) labels on every icon (d) colour as the only clue
4. 4.♿ A screen has 9 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
5. 5.True or false: “sudden loud sounds” makes the app harder to use. (a) False (b) True
6. 6.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Body text: 13 px
   Caption: 19 px
   Label: 15 px
   Menu: 18 px
   Footer: 13 px
7. 7.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a bright colour (c) a sound (d) a text label
8. 8.Which of these helps everyone use the app? (a) tiny tap areas (b) sudden loud sounds (c) colour as the only clue (d) labels on every icon
9. 9.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
10. 10.♿ A screen has 10 icon buttons. Only 9 of them have a text label for screen readers. How many still need a label?
11. 11.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 20 px
    Title: 9 px
    Label: 23 px (a) Title (b) Label (c) Caption
12. 12.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 24 px
    Hint: 13 px
    Menu: 20 px
    Caption: 15 px
13. 13.Which of these helps everyone use the app? (a) colour as the only clue (b) strong colour contrast (c) tiny tap areas (d) fast-flashing lights
14. 14.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
15. 15.Which of these helps everyone use the app? (a) tiny tap areas (b) icons with no labels (c) text that can grow (d) sudden loud sounds
16. 16.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 22 px
    Body text: 12 px
    Footer: 17 px
    Label: 25 px (a) Label (b) Title (c) Body text (d) Footer
17. 17.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
18. 18.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 13 px
    Label: 21 px
    Body text: 18 px (a) Body text (b) Footer (c) Label
19. 19.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 14 px
    Title: 22 px
    Label: 17 px
    Footer: 23 px (a) Hint (b) Footer (c) Title (d) Label
20. 20.🔍 Which is the odd one out? (a) labels on every icon (b) sudden loud sounds (c) colour as the only clue (d) tiny tap areas
21. 21.♿ A screen has 7 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
22. 22.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
23. 23.Which of these makes the app harder to use? (a) text that can grow (b) sudden loud sounds (c) captions on videos (d) labels on every icon
24. 24.🔍 Which is the odd one out? (a) labels on every icon (b) fast-flashing lights (c) strong colour contrast (d) text that can grow
25. 25.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) makes it harder (b) helps everyone
26. 26.♿ A screen has 5 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
27. 27.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) makes it harder (b) helps everyone
28. 28.🔍 Which is the odd one out? (a) sudden loud sounds (b) tiny tap areas (c) colour as the only clue (d) captions on videos
29. 29.♿ Why add captions to videos? (a) so anyone can follow (b) to hide the sound (c) to slow them down (d) to add colour
30. 30.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
31. 31.True or false: “colour as the only clue” helps everyone use the app. (a) False (b) True
32. 32.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
33. 33.♿ A screen has 7 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
34. 34.🔍 Which is the odd one out? (a) labels on every icon (b) tiny tap areas (c) big touch targets (d) captions on videos
35. 35.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 12 px
    Title: 25 px
    Footer: 18 px (a) Label (b) Footer (c) Title
36. 36.Which of these makes the app harder to use? (a) labels on every icon (b) big touch targets (c) fast-flashing lights (d) text that can grow
37. 37.♿ A screen has 11 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
38. 38.♿ A screen has 9 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
39. 39.♿ A screen has 6 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
40. 40.True or false: “icons with no labels” helps everyone use the app. (a) True (b) False

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