App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 303 · 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?
   Hint: 21 px
   Footer: 19 px
   Title: 27 px
   Body text: 13 px (a) Footer (b) Hint (c) Title (d) Body text
2. 2.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
3. 3.♿ A screen has 7 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
4. 4.♿ Showing right or wrong only in red and green is a problem for ___. (a) colour-blind users (b) fast typists (c) the server (d) the battery
5. 5.🔍 Which is the odd one out? (a) fast-flashing lights (b) sudden loud sounds (c) icons with no labels (d) captions on videos
6. 6.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) makes it harder (b) helps everyone
7. 7.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Hint: 24 px
   Label: 12 px
   Menu: 21 px
   Footer: 25 px
   Body text: 20 px (a) Footer (b) Label (c) Hint (d) Menu
8. 8.🔍 Which is the odd one out? (a) strong colour contrast (b) labels on every icon (c) sudden loud sounds (d) text that can grow
9. 9.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
10. 10.Which of these helps everyone use the app? (a) tiny tap areas (b) fast-flashing lights (c) text that can grow (d) colour as the only clue
11. 11.True or false: “sudden loud sounds” makes the app harder to use. (a) True (b) False
12. 12.Which of these helps everyone use the app? (a) colour as the only clue (b) sudden loud sounds (c) icons with no labels (d) strong colour contrast
13. 13.♿ A screen has 11 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
14. 14.♿ What does a screen reader do? (a) makes text tiny (b) plays music (c) takes photos (d) reads the screen aloud
15. 15.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 13 px
    Footer: 22 px
    Title: 13 px
    Caption: 22 px
16. 16.Which of these helps everyone use the app? (a) tiny tap areas (b) big touch targets (c) colour as the only clue (d) fast-flashing lights
17. 17.🔍 Which is the odd one out? (a) captions on videos (b) fast-flashing lights (c) big touch targets (d) text that can grow
18. 18.Which of these helps everyone use the app? (a) colour as the only clue (b) tiny tap areas (c) labels on every icon (d) sudden loud sounds
19. 19.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
20. 20.Which of these makes the app harder to use? (a) strong colour contrast (b) icons with no labels (c) captions on videos (d) text that can grow
21. 21.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 9 px
    Footer: 16 px
    Hint: 21 px
    Label: 21 px (a) Caption (b) Hint (c) Label (d) Footer
22. 22.True or false: “text that can grow” makes the app harder to use. (a) False (b) True
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.True or false: “big touch targets” helps everyone use the app. (a) True (b) False
25. 25.Which of these makes the app harder to use? (a) text that can grow (b) strong colour contrast (c) labels on every icon (d) tiny tap areas
26. 26.♿ What should every icon-only button have for screen readers? (a) a bright colour (b) a text label (c) a sound (d) a long animation
27. 27.🔍 Which is the odd one out? (a) colour as the only clue (b) icons with no labels (c) fast-flashing lights (d) strong colour contrast
28. 28.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 28 px
    Menu: 28 px
    Footer: 12 px (a) Menu (b) Footer (c) Hint
29. 29.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
30. 30.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 21 px
    Caption: 21 px
    Footer: 23 px
31. 31.♿ A screen has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
32. 32.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) helps everyone (b) makes it harder
33. 33.♿ Accessibility means an app works for ___. (a) only the coder (b) only experts (c) nobody (d) everyone
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 20 px
    Body text: 9 px
    Caption: 22 px (a) Title (b) Body text (c) Caption
35. 35.🔍 Which is the odd one out? (a) big touch targets (b) labels on every icon (c) text that can grow (d) tiny tap areas
36. 36.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 13 px
    Menu: 11 px
    Title: 24 px
    Hint: 16 px
37. 37.True or false: “captions on videos” makes the app harder to use. (a) False (b) True
38. 38.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) sudden loud sounds (d) captions on videos
39. 39.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
40. 40.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 14 px
    Title: 18 px
    Hint: 23 px
    Label: 16 px
    Body text: 24 px (a) Footer (b) Hint (c) Title (d) Label

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