App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 6 · 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: “captions on videos” makes the app harder to use. (a) False (b) True
2. 2.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) captions on videos (b) colour as the only clue (c) sudden loud sounds (d) fast-flashing lights
4. 4.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Footer: 21 px
   Caption: 24 px
   Body text: 10 px
5. 5.True or false: “strong colour contrast” makes the app harder to use. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) labels on every icon (b) fast-flashing lights (c) big touch targets (d) captions on videos
7. 7.🔍 Which is the odd one out? (a) fast-flashing lights (b) icons with no labels (c) tiny tap areas (d) text that can grow
8. 8.♿ A screen has 12 icon buttons. Only 9 of them have a text label for screen readers. How many still need a label?
9. 9.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
10. 10.🔍 Which is the odd one out? (a) sudden loud sounds (b) fast-flashing lights (c) labels on every icon (d) colour as the only clue
11. 11.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 10 px
    Body text: 26 px
    Label: 20 px
    Hint: 23 px
    Menu: 28 px (a) Title (b) Body text (c) Hint (d) Label
12. 12.♿ Showing right or wrong only in red and green is a problem for ___. (a) colour-blind users (b) the battery (c) the server (d) fast typists
13. 13.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 20 px
    Title: 24 px
    Body text: 12 px
    Hint: 22 px
14. 14.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
15. 15.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 19 px
    Footer: 14 px
    Menu: 19 px
    Hint: 19 px
    Label: 17 px
16. 16.♿ What does a screen reader do? (a) makes text tiny (b) takes photos (c) reads the screen aloud (d) plays music
17. 17.Which of these makes the app harder to use? (a) text that can grow (b) big touch targets (c) strong colour contrast (d) tiny tap areas
18. 18.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
19. 19.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 19 px
    Body text: 22 px
    Title: 28 px
    Caption: 24 px
    Footer: 10 px (a) Hint (b) Title (c) Body text (d) Footer
20. 20.🔍 Which is the odd one out? (a) icons with no labels (b) big touch targets (c) labels on every icon (d) strong colour contrast
21. 21.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
22. 22.♿ A screen has 6 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 28 px
    Title: 9 px
    Hint: 25 px (a) Title (b) Hint (c) Label
24. 24.♿ A screen has 10 icon buttons. Only 9 of them have a text label for screen readers. How many still need a label?
25. 25.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 14 px
    Title: 21 px
    Menu: 26 px (a) Menu (b) Title (c) Caption
26. 26.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
27. 27.🔍 Which is the odd one out? (a) icons with no labels (b) colour as the only clue (c) fast-flashing lights (d) strong colour contrast
28. 28.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
29. 29.Which of these makes the app harder to use? (a) strong colour contrast (b) text that can grow (c) sudden loud sounds (d) labels on every icon
30. 30.♿ A screen has 7 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
31. 31.True or false: “big touch targets” helps everyone use the app. (a) False (b) True
32. 32.Which of these makes the app harder to use? (a) labels on every icon (b) big touch targets (c) strong colour contrast (d) fast-flashing lights
33. 33.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 18 px
    Body text: 12 px
    Footer: 26 px
    Title: 16 px
    Caption: 27 px (a) Hint (b) Footer (c) Title (d) Body text
34. 34.♿ A screen has 7 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
35. 35.♿ A screen has 8 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
36. 36.Which of these helps everyone use the app? (a) icons with no labels (b) text that can grow (c) tiny tap areas (d) colour as the only clue
37. 37.♿ What should every icon-only button have for screen readers? (a) a sound (b) a long animation (c) a bright colour (d) a text label
38. 38.True or false: “sudden loud sounds” helps everyone use the app. (a) False (b) True
39. 39.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
40. 40.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 23 px
    Caption: 23 px
    Footer: 22 px
    Hint: 16 px
    Label: 13 px

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