App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 86 · 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.🔍 Which is the odd one out? (a) tiny tap areas (b) big touch targets (c) sudden loud sounds (d) fast-flashing lights
2. 2.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
3. 3.Which of these makes the app harder to use? (a) big touch targets (b) text that can grow (c) labels on every icon (d) icons with no labels
4. 4.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Hint: 14 px
   Menu: 12 px
   Body text: 11 px
   Label: 11 px
5. 5.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
6. 6.♿ A screen has 11 icon buttons. Only 9 of them have a text label for screen readers. How many still need a label?
7. 7.True or false: “icons with no labels” helps everyone use the app. (a) True (b) False
8. 8.♿ What does a screen reader do? (a) takes photos (b) plays music (c) reads the screen aloud (d) makes text tiny
9. 9.♿ Why add captions to videos? (a) to add colour (b) so anyone can follow (c) to hide the sound (d) to slow them down
10. 10.True or false: “captions on videos” helps everyone use the app. (a) False (b) True
11. 11.♿ What should every icon-only button have for screen readers? (a) a sound (b) a text label (c) a long animation (d) a bright colour
12. 12.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 26 px
    Title: 24 px
    Footer: 12 px
    Caption: 17 px
    Menu: 21 px (a) Body text (b) Footer (c) Title (d) Caption
13. 13.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 9 px
    Label: 26 px
    Caption: 26 px
    Title: 16 px (a) Body text (b) Title (c) Caption (d) Label
14. 14.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) colour as the only clue (d) big touch targets
15. 15.🔍 Which is the odd one out? (a) sudden loud sounds (b) fast-flashing lights (c) tiny tap areas (d) captions on videos
16. 16.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
17. 17.♿ Accessibility means an app works for ___. (a) nobody (b) everyone (c) only experts (d) only the coder
18. 18.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 15 px
    Label: 20 px
    Caption: 22 px
19. 19.True or false: “big touch targets” helps everyone use the app. (a) False (b) True
20. 20.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 17 px
    Menu: 10 px
    Caption: 14 px
21. 21.🔍 Which is the odd one out? (a) sudden loud sounds (b) text that can grow (c) captions on videos (d) labels on every icon
22. 22.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 16 px
    Caption: 22 px
    Menu: 17 px
    Hint: 11 px
    Label: 22 px
23. 23.True or false: “tiny tap areas” makes the app harder to use. (a) False (b) True
24. 24.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
25. 25.🔍 Which is the odd one out? (a) fast-flashing lights (b) captions on videos (c) text that can grow (d) labels on every icon
26. 26.Which of these helps everyone use the app? (a) icons with no labels (b) tiny tap areas (c) captions on videos (d) sudden loud sounds
27. 27.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) the server (c) fast typists (d) colour-blind users
28. 28.♿ A screen has 12 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 28 px
    Caption: 19 px
    Menu: 11 px
    Hint: 18 px (a) Hint (b) Caption (c) Title (d) Menu
30. 30.🔍 Which is the odd one out? (a) tiny tap areas (b) captions on videos (c) labels on every icon (d) big touch targets
31. 31.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 12 px
    Footer: 17 px
    Title: 12 px
    Body text: 20 px
32. 32.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
33. 33.🔍 Which is the odd one out? (a) labels on every icon (b) captions on videos (c) icons with no labels (d) strong colour contrast
34. 34.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
35. 35.♿ A screen has 9 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
36. 36.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 22 px
    Title: 20 px
    Menu: 17 px
    Hint: 11 px
    Caption: 19 px
37. 37.Which of these helps everyone use the app? (a) sudden loud sounds (b) big touch targets (c) icons with no labels (d) tiny tap areas
38. 38.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 23 px
    Title: 19 px
    Hint: 12 px
39. 39.🔍 Which is the odd one out? (a) text that can grow (b) colour as the only clue (c) captions on videos (d) big touch targets
40. 40.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False

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