App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 220 · 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.♿ Why add captions to videos? (a) to add colour (b) to hide the sound (c) to slow them down (d) so anyone can follow
2. 2.♿ A screen has 8 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
3. 3.♿ What does a screen reader do? (a) takes photos (b) reads the screen aloud (c) plays music (d) makes text tiny
4. 4.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Footer: 20 px
   Menu: 24 px
   Body text: 11 px
   Label: 16 px
   Title: 22 px
5. 5.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Label: 13 px
   Title: 23 px
   Hint: 21 px
   Footer: 12 px
   Caption: 20 px
6. 6.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
7. 7.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 22 px
   Menu: 12 px
   Title: 18 px (a) Menu (b) Title (c) Footer
8. 8.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Menu: 18 px
   Caption: 21 px
   Hint: 28 px
   Title: 18 px
   Footer: 12 px (a) Caption (b) Hint (c) Menu (d) Footer
9. 9.Which of these helps everyone use the app? (a) icons with no labels (b) captions on videos (c) colour as the only clue (d) tiny tap areas
10. 10.True or false: “icons with no labels” helps everyone use the app. (a) False (b) True
11. 11.♿ What should every icon-only button have for screen readers? (a) a bright colour (b) a long animation (c) a text label (d) a sound
12. 12.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 13 px
    Hint: 24 px
    Menu: 18 px
    Caption: 23 px
    Body text: 13 px
13. 13.🔍 Which is the odd one out? (a) captions on videos (b) big touch targets (c) fast-flashing lights (d) text that can grow
14. 14.True or false: “captions on videos” helps everyone use the app. (a) True (b) False
15. 15.♿ A screen has 8 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
16. 16.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
17. 17.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
18. 18.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
19. 19.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 18 px
    Caption: 24 px
    Hint: 28 px
    Footer: 9 px (a) Caption (b) Hint (c) Title (d) Footer
20. 20.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
21. 21.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 18 px
    Label: 16 px
    Title: 12 px (a) Body text (b) Label (c) Title
22. 22.🔍 Which is the odd one out? (a) icons with no labels (b) sudden loud sounds (c) strong colour contrast (d) fast-flashing lights
23. 23.Which of these makes the app harder to use? (a) big touch targets (b) text that can grow (c) tiny tap areas (d) captions on videos
24. 24.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 9 px
    Label: 27 px
    Title: 26 px
    Footer: 19 px
    Body text: 26 px (a) Title (b) Label (c) Footer (d) Caption
25. 25.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
26. 26.True or false: “strong colour contrast” makes the app harder to use. (a) True (b) False
27. 27.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 17 px
    Caption: 17 px
    Label: 13 px (a) Title (b) Caption (c) Label
28. 28.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
29. 29.Which of these helps everyone use the app? (a) sudden loud sounds (b) icons with no labels (c) fast-flashing lights (d) text that can grow
30. 30.♿ A screen has 11 icon buttons. Only 7 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?
    Caption: 23 px
    Title: 24 px
    Menu: 11 px
    Body text: 12 px
    Label: 14 px
32. 32.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 22 px
    Hint: 21 px
    Label: 15 px
    Footer: 12 px
    Body text: 10 px
33. 33.Which of these helps everyone use the app? (a) icons with no labels (b) colour as the only clue (c) fast-flashing lights (d) labels on every icon
34. 34.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
35. 35.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
36. 36.True or false: “colour as the only clue” helps everyone use the app. (a) False (b) True
37. 37.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 13 px
    Body text: 23 px
    Menu: 16 px
    Label: 21 px
38. 38.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 17 px
    Caption: 16 px
    Hint: 12 px
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 21 px
    Menu: 10 px
    Caption: 16 px (a) Caption (b) Body text (c) Menu
40. 40.♿ A screen has 7 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?

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