App Dev Worksheet: Accessibility

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

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students