App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 268 · 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.True or false: “strong colour contrast” makes the app harder to use. (a) False (b) True
2. 2.♿ A screen has 6 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
3. 3.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) fast typists (c) the server (d) colour-blind users
4. 4.♿ A screen has 9 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
5. 5.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Body text: 23 px
   Label: 15 px
   Title: 22 px
   Hint: 20 px
6. 6.Which of these makes the app harder to use? (a) text that can grow (b) big touch targets (c) icons with no labels (d) strong colour contrast
7. 7.True or false: “sudden loud sounds” makes the app harder to use. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) icons with no labels (b) tiny tap areas (c) fast-flashing lights (d) big touch targets
9. 9.🔍 Which is the odd one out? (a) strong colour contrast (b) labels on every icon (c) icons with no labels (d) captions on videos
10. 10.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 28 px
    Footer: 28 px
    Body text: 18 px
    Title: 14 px (a) Caption (b) Title (c) Body text (d) Footer
11. 11.♿ What does a screen reader do? (a) takes photos (b) makes text tiny (c) reads the screen aloud (d) plays music
12. 12.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
13. 13.♿ A screen has 9 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
14. 14.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
15. 15.True or false: “captions on videos” makes the app harder to use. (a) True (b) False
16. 16.Which of these helps everyone use the app? (a) icons with no labels (b) labels on every icon (c) colour as the only clue (d) tiny tap areas
17. 17.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
18. 18.True or false: “strong colour contrast” helps everyone use the app. (a) True (b) False
19. 19.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
20. 20.🔍 Which is the odd one out? (a) sudden loud sounds (b) text that can grow (c) big touch targets (d) labels on every icon
21. 21.Which of these makes the app harder to use? (a) strong colour contrast (b) big touch targets (c) tiny tap areas (d) text that can grow
22. 22.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a bright colour (c) a text label (d) a sound
23. 23.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
24. 24.Which of these helps everyone use the app? (a) big touch targets (b) tiny tap areas (c) icons with no labels (d) colour as the only clue
25. 25.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
26. 26.Which of these makes the app harder to use? (a) colour as the only clue (b) captions on videos (c) strong colour contrast (d) text that can grow
27. 27.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 27 px
    Label: 16 px
    Caption: 16 px
    Title: 14 px (a) Title (b) Label (c) Caption (d) Menu
28. 28.🔍 Which is the odd one out? (a) colour as the only clue (b) labels on every icon (c) fast-flashing lights (d) tiny tap areas
29. 29.True or false: “tiny tap areas” helps everyone use the app. (a) True (b) False
30. 30.♿ A screen has 6 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
31. 31.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 13 px
    Menu: 14 px
    Body text: 16 px
    Footer: 21 px
    Title: 12 px
32. 32.True or false: “icons with no labels” helps everyone use the app. (a) True (b) False
33. 33.♿ A screen has 9 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
34. 34.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 22 px
    Body text: 24 px
    Caption: 10 px
35. 35.True or false: “big touch targets” makes the app harder to use. (a) False (b) True
36. 36.Which of these helps everyone use the app? (a) icons with no labels (b) tiny tap areas (c) fast-flashing lights (d) strong colour contrast
37. 37.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 17 px
    Title: 18 px
    Hint: 9 px
    Label: 21 px
    Menu: 18 px (a) Label (b) Hint (c) Caption (d) Title
38. 38.♿ A screen has 6 icon buttons. Only 5 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. How many texts on this screen are too small?
    Title: 23 px
    Body text: 14 px
    Caption: 23 px
    Label: 21 px
    Footer: 17 px
40. 40.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False

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