App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 770 · 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.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Label: 28 px
   Title: 20 px
   Caption: 16 px
   Footer: 19 px
   Hint: 9 px (a) Title (b) Hint (c) Caption (d) Label
2. 2.Which of these helps everyone use the app? (a) fast-flashing lights (b) strong colour contrast (c) tiny tap areas (d) sudden loud sounds
3. 3.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Body text: 12 px
   Caption: 23 px
   Hint: 20 px
4. 4.♿ A screen has 6 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
5. 5.♿ A screen has 11 icon buttons. Only 9 of them have a text label for screen readers. How many still need a label?
6. 6.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
7. 7.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 25 px
   Footer: 10 px
   Body text: 23 px
   Menu: 19 px
   Hint: 19 px (a) Title (b) Menu (c) Footer (d) Body text
8. 8.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Body text: 13 px
   Label: 27 px
   Caption: 21 px
   Title: 24 px
   Hint: 21 px (a) Caption (b) Title (c) Body text (d) Label
10. 10.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
11. 11.True or false: “captions on videos” makes the app harder to use. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) icons with no labels (b) tiny tap areas (c) labels on every icon (d) fast-flashing lights
13. 13.True or false: “labels on every icon” helps everyone use the app. (a) True (b) False
14. 14.♿ Showing right or wrong only in red and green is a problem for ___. (a) colour-blind users (b) the server (c) the battery (d) fast typists
15. 15.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 13 px
    Body text: 16 px
    Menu: 11 px
    Footer: 10 px
16. 16.Which of these makes the app harder to use? (a) labels on every icon (b) sudden loud sounds (c) text that can grow (d) big touch targets
17. 17.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
18. 18.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 25 px
    Footer: 20 px
    Title: 11 px (a) Title (b) Caption (c) Footer
19. 19.True or false: “icons with no labels” makes the app harder to use. (a) False (b) True
20. 20.♿ Accessibility means an app works for ___. (a) only the coder (b) nobody (c) everyone (d) only experts
21. 21.♿ What should every icon-only button have for screen readers? (a) a sound (b) a bright colour (c) a long animation (d) a text label
22. 22.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 22 px
    Footer: 19 px
    Body text: 10 px (a) Title (b) Body text (c) Footer
24. 24.🔍 Which is the odd one out? (a) big touch targets (b) captions on videos (c) icons with no labels (d) text that can grow
25. 25.♿ A screen has 9 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
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 of these helps everyone use the app? (a) colour as the only clue (b) icons with no labels (c) captions on videos (d) tiny tap areas
28. 28.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 27 px
    Hint: 10 px
    Menu: 28 px (a) Menu (b) Hint (c) Body text
29. 29.♿ A screen has 11 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
30. 30.♿ Why add captions to videos? (a) to slow them down (b) to add colour (c) to hide the sound (d) so anyone can follow
31. 31.True or false: “colour as the only clue” makes the app harder to use. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) tiny tap areas (b) captions on videos (c) sudden loud sounds (d) icons with no labels
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 10 px
    Body text: 16 px
    Footer: 23 px
34. 34.♿ A screen has 6 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
35. 35.True or false: “labels on every icon” makes the app harder to use. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) colour as the only clue (b) icons with no labels (c) strong colour contrast (d) tiny tap areas
37. 37.True or false: “sudden loud sounds” makes the app harder to use. (a) True (b) False
38. 38.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 15 px
    Footer: 12 px
    Menu: 24 px
39. 39.True or false: “text that can grow” helps everyone use the app. (a) True (b) False
40. 40.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 21 px
    Footer: 11 px
    Title: 20 px

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