App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 522 · 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. Which text on this screen is too small?
   Title: 17 px
   Footer: 9 px
   Label: 26 px
   Caption: 18 px
   Body text: 25 px (a) Label (b) Footer (c) Title (d) Caption
2. 2.True or false: “captions on videos” makes the app harder to use. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) text that can grow (b) captions on videos (c) big touch targets (d) tiny tap areas
4. 4.♿ 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
5. 5.🔍 Which is the odd one out? (a) icons with no labels (b) tiny tap areas (c) text that can grow (d) sudden loud sounds
6. 6.♿ Why add captions to videos? (a) to add colour (b) so anyone can follow (c) to slow them down (d) to hide the sound
7. 7.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
8. 8.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
9. 9.♿ Accessibility means an app works for ___. (a) only experts (b) only the coder (c) everyone (d) nobody
10. 10.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) helps everyone (b) makes it harder
11. 11.♿ What does a screen reader do? (a) reads the screen aloud (b) makes text tiny (c) plays music (d) takes photos
12. 12.Which of these makes the app harder to use? (a) text that can grow (b) fast-flashing lights (c) strong colour contrast (d) big touch targets
13. 13.Which of these helps everyone use the app? (a) fast-flashing lights (b) tiny tap areas (c) icons with no labels (d) big touch targets
14. 14.Which of these helps everyone use the app? (a) captions on videos (b) tiny tap areas (c) sudden loud sounds (d) colour as the only clue
15. 15.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
16. 16.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 18 px
    Label: 25 px
    Menu: 14 px (a) Label (b) Menu (c) Hint
17. 17.True or false: “fast-flashing lights” helps everyone use the app. (a) False (b) True
18. 18.Which of these helps everyone use the app? (a) sudden loud sounds (b) tiny tap areas (c) icons with no labels (d) labels on every icon
19. 19.Which of these makes the app harder to use? (a) icons with no labels (b) strong colour contrast (c) labels on every icon (d) big touch targets
20. 20.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 15 px
    Title: 11 px
    Body text: 18 px
21. 21.🔍 Which is the odd one out? (a) colour as the only clue (b) icons with no labels (c) fast-flashing lights (d) captions on videos
22. 22.🔍 Which is the odd one out? (a) strong colour contrast (b) fast-flashing lights (c) big touch targets (d) text that can grow
23. 23.🔍 Which is the odd one out? (a) sudden loud sounds (b) icons with no labels (c) fast-flashing lights (d) labels on every icon
24. 24.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
25. 25.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 13 px
    Footer: 28 px
    Menu: 27 px
    Hint: 25 px (a) Hint (b) Footer (c) Menu (d) Caption
26. 26.🔍 Which is the odd one out? (a) captions on videos (b) labels on every icon (c) strong colour contrast (d) icons with no labels
27. 27.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) helps everyone (b) makes it harder
28. 28.🔍 Which is the odd one out? (a) sudden loud sounds (b) fast-flashing lights (c) tiny tap areas (d) big touch targets
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 21 px
    Caption: 21 px
    Body text: 17 px
    Title: 11 px
    Menu: 16 px (a) Caption (b) Footer (c) Body text (d) Title
30. 30.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
31. 31.Which of these helps everyone use the app? (a) sudden loud sounds (b) tiny tap areas (c) fast-flashing lights (d) text that can grow
32. 32.♿ What should every icon-only button have for screen readers? (a) a sound (b) a long animation (c) a bright colour (d) a text label
33. 33.♿ A screen has 5 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
34. 34.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
35. 35.Which of these makes the app harder to use? (a) strong colour contrast (b) text that can grow (c) colour as the only clue (d) big touch targets
36. 36.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 24 px
    Hint: 20 px
    Caption: 13 px
    Title: 22 px
37. 37.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 16 px
    Footer: 24 px
    Body text: 16 px
    Caption: 22 px
    Title: 13 px
38. 38.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
39. 39.♿ A screen has 8 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
40. 40.Which of these makes the app harder to use? (a) tiny tap areas (b) big touch targets (c) captions on videos (d) labels on every icon

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