App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 513 · 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.♿ A screen has 8 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
2. 2.♿ What should every icon-only button have for screen readers? (a) a sound (b) a bright colour (c) a long animation (d) a text label
3. 3.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Hint: 18 px
   Body text: 20 px
   Label: 20 px
4. 4.True or false: “tiny tap areas” makes the app harder to use. (a) True (b) False
5. 5.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
6. 6.Which of these helps everyone use the app? (a) fast-flashing lights (b) tiny tap areas (c) colour as the only clue (d) big touch targets
7. 7.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
8. 8.True or false: “sudden loud sounds” makes the app harder to use. (a) False (b) True
9. 9.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
10. 10.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 23 px
    Title: 13 px
    Hint: 25 px (a) Body text (b) Hint (c) Title
11. 11.Which of these helps everyone use the app? (a) labels on every icon (b) icons with no labels (c) fast-flashing lights (d) sudden loud sounds
12. 12.♿ 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
13. 13.🔍 Which is the odd one out? (a) big touch targets (b) icons with no labels (c) captions on videos (d) text that can grow
14. 14.🔍 Which is the odd one out? (a) strong colour contrast (b) big touch targets (c) captions on videos (d) colour as the only clue
15. 15.🔍 Which is the odd one out? (a) strong colour contrast (b) big touch targets (c) fast-flashing lights (d) text that can grow
16. 16.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 23 px
    Label: 18 px
    Menu: 9 px
    Body text: 25 px (a) Title (b) Menu (c) Body text (d) Label
17. 17.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 24 px
    Hint: 26 px
    Label: 25 px
    Menu: 12 px (a) Caption (b) Hint (c) Label (d) Menu
18. 18.🔍 Which is the odd one out? (a) colour as the only clue (b) sudden loud sounds (c) captions on videos (d) icons with no labels
19. 19.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
20. 20.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
21. 21.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 19 px
    Hint: 22 px
    Menu: 10 px
22. 22.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 28 px
    Footer: 13 px
    Body text: 28 px
    Label: 23 px (a) Label (b) Body text (c) Title (d) Footer
23. 23.Which of these makes the app harder to use? (a) labels on every icon (b) big touch targets (c) tiny tap areas (d) strong colour contrast
24. 24.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 16 px
    Footer: 17 px
    Caption: 23 px
    Label: 10 px (a) Footer (b) Title (c) Caption (d) Label
25. 25.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 18 px
    Title: 14 px
    Body text: 17 px
    Menu: 13 px
    Label: 18 px
26. 26.Which of these helps everyone use the app? (a) captions on videos (b) colour as the only clue (c) tiny tap areas (d) icons with no labels
27. 27.Which of these helps everyone use the app? (a) colour as the only clue (b) tiny tap areas (c) text that can grow (d) icons with no labels
28. 28.♿ A screen has 8 icon buttons. Only 1 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. How many texts on this screen are too small?
    Caption: 11 px
    Footer: 11 px
    Title: 21 px
    Hint: 21 px
    Body text: 22 px
30. 30.True or false: “text that can grow” makes the app harder to use. (a) False (b) True
31. 31.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
32. 32.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
33. 33.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 22 px
    Label: 9 px
    Body text: 22 px
    Title: 26 px (a) Title (b) Label (c) Hint (d) Body text
34. 34.♿ A screen has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
35. 35.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
36. 36.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 22 px
    Body text: 23 px
    Footer: 21 px
    Label: 21 px
37. 37.♿ Accessibility means an app works for ___. (a) only the coder (b) everyone (c) nobody (d) only experts
38. 38.Which of these makes the app harder to use? (a) labels on every icon (b) captions on videos (c) fast-flashing lights (d) text that can grow
39. 39.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
40. 40.True or false: “labels on every icon” helps everyone use the app. (a) True (b) False

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