App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 730 · 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.True or false: “big touch targets” makes the app harder to use. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) big touch targets (b) captions on videos (c) colour as the only clue (d) labels on every icon
3. 3.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Body text: 17 px
   Menu: 10 px
   Footer: 19 px
   Title: 18 px (a) Title (b) Footer (c) Menu (d) Body text
4. 4.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
5. 5.True or false: “big touch targets” helps everyone use the app. (a) False (b) True
6. 6.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Title: 20 px
   Hint: 18 px
   Label: 22 px
   Footer: 18 px
7. 7.♿ What should every icon-only button have for screen readers? (a) a sound (b) a text label (c) a bright colour (d) a long animation
8. 8.🔍 Which is the odd one out? (a) strong colour contrast (b) tiny tap areas (c) fast-flashing lights (d) sudden loud sounds
9. 9.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Footer: 17 px
   Body text: 23 px
   Label: 21 px
   Menu: 18 px
   Hint: 15 px
10. 10.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 28 px
    Caption: 28 px
    Label: 20 px
    Footer: 10 px
    Hint: 23 px (a) Caption (b) Label (c) Title (d) Footer
11. 11.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 13 px
    Caption: 19 px
    Label: 19 px
12. 12.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
13. 13.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 12 px
    Title: 11 px
    Caption: 11 px
    Label: 18 px
    Hint: 13 px
14. 14.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
15. 15.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 17 px
    Caption: 23 px
    Title: 12 px
    Label: 21 px
    Menu: 21 px
16. 16.True or false: “icons with no labels” helps everyone use the app. (a) False (b) True
17. 17.♿ A screen has 9 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
18. 18.True or false: “fast-flashing lights” makes the app harder to use. (a) False (b) True
19. 19.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
20. 20.Which of these makes the app harder to use? (a) colour as the only clue (b) text that can grow (c) labels on every icon (d) captions on videos
21. 21.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) fast-flashing lights (d) big touch targets
22. 22.Which of these makes the app harder to use? (a) big touch targets (b) strong colour contrast (c) sudden loud sounds (d) labels on every icon
23. 23.🔍 Which is the odd one out? (a) text that can grow (b) labels on every icon (c) captions on videos (d) icons with no labels
24. 24.♿ A screen has 8 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
25. 25.🔍 Which is the odd one out? (a) icons with no labels (b) labels on every icon (c) tiny tap areas (d) sudden loud sounds
26. 26.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 12 px
    Caption: 23 px
    Body text: 14 px
    Hint: 20 px
27. 27.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 18 px
    Body text: 14 px
    Title: 18 px
    Menu: 16 px
28. 28.♿ What does a screen reader do? (a) takes photos (b) makes text tiny (c) plays music (d) reads the screen aloud
29. 29.♿ A screen has 11 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
30. 30.Which of these makes the app harder to use? (a) text that can grow (b) big touch targets (c) icons with no labels (d) labels on every icon
31. 31.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) helps everyone (b) makes it harder
32. 32.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) makes it harder (b) helps everyone
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 12 px
    Title: 13 px
    Footer: 10 px
    Body text: 21 px
34. 34.♿ A screen has 10 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
35. 35.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) colour-blind users (c) the server (d) fast typists
36. 36.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 14 px
    Title: 26 px
    Label: 18 px (a) Label (b) Hint (c) Title
37. 37.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 10 px
    Label: 24 px
    Footer: 20 px
    Menu: 17 px (a) Label (b) Menu (c) Hint (d) Footer
38. 38.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
39. 39.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
40. 40.True or false: “colour as the only clue” makes the app harder to use. (a) False (b) True

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