App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 433 · 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: “fast-flashing lights” makes the app harder to use. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) sudden loud sounds (b) tiny tap areas (c) colour as the only clue (d) labels on every icon
3. 3.♿ Showing right or wrong only in red and green is a problem for ___. (a) fast typists (b) the server (c) the battery (d) colour-blind users
4. 4.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Caption: 10 px
   Footer: 24 px
   Hint: 19 px
   Menu: 24 px
   Body text: 18 px (a) Footer (b) Hint (c) Caption (d) Menu
5. 5.♿ Accessibility means an app works for ___. (a) only the coder (b) nobody (c) everyone (d) only experts
6. 6.🔍 Which is the odd one out? (a) strong colour contrast (b) big touch targets (c) tiny tap areas (d) captions on videos
7. 7.♿ A screen has 12 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
8. 8.True or false: “colour as the only clue” makes the app harder to use. (a) True (b) False
9. 9.Which of these helps everyone use the app? (a) sudden loud sounds (b) big touch targets (c) icons with no labels (d) fast-flashing lights
10. 10.Which of these helps everyone use the app? (a) captions on videos (b) icons with no labels (c) sudden loud sounds (d) tiny tap areas
11. 11.True or false: “text that can grow” makes the app harder to use. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) fast-flashing lights (b) sudden loud sounds (c) icons with no labels (d) strong colour contrast
13. 13.🔍 Which is the odd one out? (a) text that can grow (b) fast-flashing lights (c) captions on videos (d) labels on every icon
14. 14.♿ A screen has 12 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
15. 15.♿ Why add captions to videos? (a) to hide the sound (b) to add colour (c) so anyone can follow (d) to slow them down
16. 16.🔍 Which is the odd one out? (a) text that can grow (b) captions on videos (c) colour as the only clue (d) big touch targets
17. 17.♿ A screen has 5 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
18. 18.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 26 px
    Label: 26 px
    Title: 12 px
    Caption: 19 px (a) Caption (b) Title (c) Body text (d) Label
19. 19.True or false: “captions on videos” makes the app harder to use. (a) True (b) False
20. 20.♿ A screen has 9 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
21. 21.🔍 Which is the odd one out? (a) tiny tap areas (b) icons with no labels (c) colour as the only clue (d) big touch targets
22. 22.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
23. 23.Which of these makes the app harder to use? (a) captions on videos (b) big touch targets (c) fast-flashing lights (d) labels on every icon
24. 24.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 23 px
    Hint: 10 px
    Footer: 22 px
25. 25.Which of these makes the app harder to use? (a) text that can grow (b) sudden loud sounds (c) captions on videos (d) big touch targets
26. 26.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 20 px
    Label: 10 px
    Body text: 23 px (a) Label (b) Body text (c) Menu
27. 27.True or false: “labels on every icon” helps everyone use the app. (a) True (b) False
28. 28.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 12 px
    Caption: 21 px
    Title: 23 px
29. 29.♿ A screen has 10 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
30. 30.♿ A screen has 12 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
31. 31.True or false: “colour as the only clue” helps everyone use the app. (a) True (b) False
32. 32.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 14 px
    Caption: 24 px
    Label: 28 px
    Menu: 19 px (a) Body text (b) Label (c) Caption (d) Menu
33. 33.True or false: “icons with no labels” makes the app harder to use. (a) False (b) True
34. 34.♿ What does a screen reader do? (a) takes photos (b) plays music (c) reads the screen aloud (d) makes text tiny
35. 35.♿ A screen has 10 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
36. 36.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
37. 37.♿ What should every icon-only button have for screen readers? (a) a sound (b) a long animation (c) a text label (d) a bright colour
38. 38.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 19 px
    Caption: 15 px
    Footer: 14 px
    Hint: 12 px
39. 39.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
40. 40.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 16 px
    Menu: 11 px
    Hint: 18 px
    Label: 21 px (a) Body text (b) Label (c) Menu (d) Hint

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