App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 561 · 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 2 of them have a text label for screen readers. How many still need a label?
2. 2.♿ Why add captions to videos? (a) to slow them down (b) to hide the sound (c) so anyone can follow (d) to add colour
3. 3.🔍 Which is the odd one out? (a) tiny tap areas (b) captions on videos (c) labels on every icon (d) strong colour contrast
4. 4.🔍 Which is the odd one out? (a) icons with no labels (b) colour as the only clue (c) big touch targets (d) tiny tap areas
5. 5.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Body text: 26 px
   Caption: 24 px
   Label: 13 px (a) Label (b) Body text (c) Caption
6. 6.♿ Accessibility means an app works for ___. (a) only experts (b) only the coder (c) everyone (d) nobody
7. 7.True or false: “captions on videos” helps everyone use the app. (a) True (b) False
8. 8.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) makes it harder (b) helps everyone
9. 9.🔍 Which is the odd one out? (a) fast-flashing lights (b) tiny tap areas (c) captions on videos (d) colour as the only clue
10. 10.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a text label (c) a sound (d) a bright colour
11. 11.♿ A screen has 6 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
12. 12.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 19 px
    Body text: 20 px
    Caption: 23 px
    Title: 17 px
    Footer: 15 px
13. 13.Which of these helps everyone use the app? (a) colour as the only clue (b) tiny tap areas (c) sudden loud sounds (d) labels on every icon
14. 14.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 21 px
    Hint: 19 px
    Caption: 17 px
15. 15.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 12 px
    Caption: 20 px
    Body text: 17 px
    Footer: 10 px
16. 16.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 25 px
    Caption: 21 px
    Hint: 27 px
    Title: 13 px (a) Hint (b) Caption (c) Title (d) Menu
17. 17.Which of these helps everyone use the app? (a) big touch targets (b) colour as the only clue (c) tiny tap areas (d) sudden loud sounds
18. 18.Which of these helps everyone use the app? (a) tiny tap areas (b) strong colour contrast (c) sudden loud sounds (d) fast-flashing lights
19. 19.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
20. 20.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 24 px
    Body text: 18 px
    Label: 17 px
    Menu: 10 px
    Title: 17 px (a) Hint (b) Label (c) Menu (d) Body text
21. 21.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 20 px
    Body text: 27 px
    Title: 14 px
    Footer: 19 px
    Hint: 17 px (a) Body text (b) Title (c) Footer (d) Menu
22. 22.♿ What does a screen reader do? (a) reads the screen aloud (b) takes photos (c) plays music (d) makes text tiny
23. 23.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) helps everyone (b) makes it harder
24. 24.♿ 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
25. 25.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
26. 26.True or false: “fast-flashing lights” helps everyone use the app. (a) False (b) True
27. 27.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
28. 28.True or false: “strong colour contrast” makes the app harder to use. (a) False (b) True
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 10 px
    Menu: 17 px
    Caption: 18 px
    Hint: 20 px (a) Menu (b) Caption (c) Hint (d) Label
30. 30.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 21 px
    Body text: 12 px
    Footer: 20 px (a) Menu (b) Body text (c) Footer
31. 31.🔍 Which is the odd one out? (a) text that can grow (b) labels on every icon (c) big touch targets (d) colour as the only clue
32. 32.🔍 Which is the odd one out? (a) sudden loud sounds (b) icons with no labels (c) fast-flashing lights (d) text that can grow
33. 33.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
34. 34.True or false: “text that can grow” helps everyone use the app. (a) False (b) True
35. 35.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) makes it harder (b) helps everyone
36. 36.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) makes it harder (b) helps everyone
37. 37.🔍 Which is the odd one out? (a) fast-flashing lights (b) big touch targets (c) text that can grow (d) captions on videos
38. 38.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 13 px
    Label: 17 px
    Title: 25 px
    Hint: 21 px
    Body text: 19 px (a) Menu (b) Title (c) Label (d) Hint
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 23 px
    Caption: 23 px
    Title: 13 px
    Hint: 23 px (a) Caption (b) Hint (c) Label (d) Title
40. 40.True or false: “fast-flashing lights” makes the app harder to use. (a) False (b) True

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