App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 650 · 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.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Title: 17 px
   Hint: 11 px
   Footer: 17 px
2. 2.♿ A screen has 8 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
3. 3.Which of these helps everyone use the app? (a) tiny tap areas (b) labels on every icon (c) icons with no labels (d) colour as the only clue
4. 4.♿ A screen has 5 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
5. 5.♿ Why add captions to videos? (a) to hide the sound (b) so anyone can follow (c) to add colour (d) to slow them down
6. 6.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Hint: 18 px
   Menu: 21 px
   Title: 13 px (a) Hint (b) Title (c) Menu
7. 7.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
8. 8.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Caption: 22 px
   Menu: 10 px
   Body text: 21 px
   Footer: 21 px
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Label: 9 px
   Hint: 20 px
   Footer: 23 px (a) Hint (b) Label (c) Footer
10. 10.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 13 px
    Menu: 17 px
    Footer: 12 px
    Body text: 21 px
11. 11.🔍 Which is the odd one out? (a) icons with no labels (b) colour as the only clue (c) sudden loud sounds (d) text that can grow
12. 12.Which of these helps everyone use the app? (a) icons with no labels (b) sudden loud sounds (c) text that can grow (d) fast-flashing lights
13. 13.True or false: “captions on videos” makes the app harder to use. (a) False (b) True
14. 14.Which of these makes the app harder to use? (a) sudden loud sounds (b) text that can grow (c) big touch targets (d) captions on videos
15. 15.♿ What does a screen reader do? (a) takes photos (b) reads the screen aloud (c) makes text tiny (d) plays music
16. 16.♿ What should every icon-only button have for screen readers? (a) a text label (b) a long animation (c) a bright colour (d) a sound
17. 17.True or false: “sudden loud sounds” makes the app harder to use. (a) True (b) False
18. 18.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
19. 19.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
20. 20.True or false: “tiny tap areas” makes the app harder to use. (a) True (b) False
21. 21.Which of these helps everyone use the app? (a) sudden loud sounds (b) fast-flashing lights (c) icons with no labels (d) strong colour contrast
22. 22.♿ A screen has 6 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
23. 23.🔍 Which is the odd one out? (a) icons with no labels (b) tiny tap areas (c) captions on videos (d) sudden loud sounds
24. 24.♿ A screen has 6 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
25. 25.🔍 Which is the odd one out? (a) labels on every icon (b) tiny tap areas (c) text that can grow (d) strong colour contrast
26. 26.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) icons with no labels (b) fast-flashing lights (c) tiny tap areas (d) strong colour contrast
28. 28.♿ A screen has 5 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
29. 29.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
30. 30.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 11 px
    Footer: 10 px
    Title: 21 px
31. 31.♿ A screen has 11 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
32. 32.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 10 px
    Title: 17 px
    Menu: 27 px (a) Title (b) Footer (c) Menu
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 19 px
    Menu: 10 px
    Body text: 15 px
34. 34.♿ A screen has 7 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
35. 35.Which of these helps everyone use the app? (a) tiny tap areas (b) icons with no labels (c) sudden loud sounds (d) captions on videos
36. 36.True or false: “icons with no labels” helps everyone use the app. (a) False (b) True
37. 37.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
38. 38.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 19 px
    Caption: 18 px
    Menu: 18 px
    Label: 25 px
    Hint: 10 px (a) Menu (b) Hint (c) Caption (d) Body text
39. 39.True or false: “captions on videos” helps everyone use the app. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) captions on videos (b) colour as the only clue (c) labels on every icon (d) text that can grow

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