App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 211 · 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: “colour as the only clue” makes the app harder to use. (a) False (b) True
2. 2.Which of these makes the app harder to use? (a) captions on videos (b) text that can grow (c) big touch targets (d) sudden loud sounds
3. 3.True or false: “big touch targets” helps everyone use the app. (a) True (b) False
4. 4.Which of these helps everyone use the app? (a) icons with no labels (b) colour as the only clue (c) big touch targets (d) sudden loud sounds
5. 5.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
6. 6.🔍 Which is the odd one out? (a) icons with no labels (b) labels on every icon (c) tiny tap areas (d) colour as the only clue
7. 7.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Label: 27 px
   Body text: 12 px
   Hint: 19 px (a) Label (b) Body text (c) Hint
8. 8.True or false: “text that can grow” makes the app harder to use. (a) False (b) True
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 11 px
   Title: 26 px
   Body text: 20 px (a) Title (b) Footer (c) Body text
10. 10.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
11. 11.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 24 px
    Label: 21 px
    Body text: 25 px
    Footer: 11 px (a) Caption (b) Footer (c) Label (d) Body text
12. 12.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
13. 13.♿ A screen has 8 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
14. 14.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 9 px
    Label: 27 px
    Caption: 22 px
    Body text: 24 px
    Title: 19 px (a) Body text (b) Label (c) Footer (d) Caption
15. 15.♿ 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
16. 16.🔍 Which is the odd one out? (a) tiny tap areas (b) sudden loud sounds (c) text that can grow (d) fast-flashing lights
17. 17.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 27 px
    Footer: 14 px
    Title: 26 px
    Body text: 17 px
    Hint: 27 px (a) Label (b) Footer (c) Body text (d) Title
18. 18.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) fast typists (c) the server (d) colour-blind users
19. 19.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
20. 20.♿ A screen has 10 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
21. 21.♿ A screen has 8 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
22. 22.♿ Why add captions to videos? (a) to add colour (b) to slow them down (c) so anyone can follow (d) to hide the sound
23. 23.🔍 Which is the odd one out? (a) icons with no labels (b) big touch targets (c) sudden loud sounds (d) fast-flashing lights
24. 24.♿ A screen has 11 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
25. 25.🔍 Which is the odd one out? (a) tiny tap areas (b) fast-flashing lights (c) captions on videos (d) colour as the only clue
26. 26.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
27. 27.♿ A screen has 12 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
28. 28.♿ Accessibility means an app works for ___. (a) only the coder (b) only experts (c) everyone (d) nobody
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 18 px
    Hint: 25 px
    Title: 9 px (a) Label (b) Hint (c) Title
30. 30.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
31. 31.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 28 px
    Hint: 23 px
    Label: 27 px
    Body text: 13 px (a) Hint (b) Caption (c) Label (d) Body text
32. 32.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) icons with no labels (d) captions on videos
33. 33.Which of these helps everyone use the app? (a) colour as the only clue (b) labels on every icon (c) fast-flashing lights (d) tiny tap areas
34. 34.♿ A screen has 5 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
35. 35.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
36. 36.♿ A screen has 12 icon buttons. Only 10 of them have a text label for screen readers. How many still need a label?
37. 37.Which of these makes the app harder to use? (a) captions on videos (b) colour as the only clue (c) big touch targets (d) labels on every icon
38. 38.🔍 Which is the odd one out? (a) text that can grow (b) captions on videos (c) tiny tap areas (d) big touch targets
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 25 px
    Label: 26 px
    Title: 22 px
    Body text: 14 px (a) Title (b) Body text (c) Label (d) Hint
40. 40.♿ A screen has 9 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?

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