App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 449 · 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.🔍 Which is the odd one out? (a) colour as the only clue (b) labels on every icon (c) tiny tap areas (d) sudden loud sounds
2. 2.True or false: “captions on videos” helps everyone use the app. (a) True (b) False
3. 3.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Body text: 21 px
   Caption: 13 px
   Label: 19 px
   Hint: 20 px
   Title: 13 px
4. 4.Which of these helps everyone use the app? (a) sudden loud sounds (b) tiny tap areas (c) big touch targets (d) fast-flashing lights
5. 5.🔍 Which is the odd one out? (a) labels on every icon (b) sudden loud sounds (c) captions on videos (d) big touch targets
6. 6.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
7. 7.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Footer: 24 px
   Menu: 14 px
   Hint: 15 px
8. 8.♿ Why add captions to videos? (a) to add colour (b) so anyone can follow (c) to hide the sound (d) to slow them down
9. 9.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Footer: 15 px
   Caption: 16 px
   Hint: 10 px
   Label: 24 px
   Body text: 14 px
10. 10.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
11. 11.♿ A screen has 8 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
12. 12.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
13. 13.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) helps everyone (b) makes it harder
14. 14.♿ 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
15. 15.♿ Accessibility means an app works for ___. (a) everyone (b) only experts (c) nobody (d) only the coder
16. 16.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
17. 17.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 23 px
    Caption: 17 px
    Body text: 10 px (a) Hint (b) Caption (c) Body text
18. 18.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 24 px
    Footer: 21 px
    Body text: 12 px
19. 19.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 13 px
    Footer: 21 px
    Hint: 19 px (a) Footer (b) Label (c) Hint
20. 20.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
21. 21.♿ A screen has 12 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
22. 22.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
23. 23.🔍 Which is the odd one out? (a) big touch targets (b) text that can grow (c) captions on videos (d) icons with no labels
24. 24.♿ A screen has 6 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
25. 25.♿ A screen has 6 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
26. 26.🔍 Which is the odd one out? (a) sudden loud sounds (b) fast-flashing lights (c) big touch targets (d) icons with no labels
27. 27.♿ A screen has 7 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
28. 28.Which of these makes the app harder to use? (a) captions on videos (b) sudden loud sounds (c) big touch targets (d) text that can grow
29. 29.♿ What should every icon-only button have for screen readers? (a) a text label (b) a long animation (c) a bright colour (d) a sound
30. 30.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 16 px
    Menu: 17 px
    Hint: 21 px
    Title: 20 px
    Caption: 20 px
31. 31.Which of these makes the app harder to use? (a) fast-flashing lights (b) big touch targets (c) captions on videos (d) strong colour contrast
32. 32.♿ A screen has 11 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
33. 33.🔍 Which is the odd one out? (a) big touch targets (b) strong colour contrast (c) text that can grow (d) colour as the only clue
34. 34.True or false: “big touch targets” helps everyone use the app. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) captions on videos (b) fast-flashing lights (c) colour as the only clue (d) sudden loud sounds
36. 36.♿ A screen has 6 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
37. 37.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 11 px
    Title: 19 px
    Hint: 24 px
    Caption: 19 px (a) Hint (b) Body text (c) Caption (d) Title
38. 38.True or false: “strong colour contrast” helps everyone use the app. (a) True (b) False
39. 39.Which of these makes the app harder to use? (a) big touch targets (b) labels on every icon (c) text that can grow (d) colour as the only clue
40. 40.♿ A screen has 9 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?

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