App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 219 · 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: “text that can grow” makes the app harder to use. (a) True (b) False
2. 2.♿ What does a screen reader do? (a) takes photos (b) reads the screen aloud (c) plays music (d) makes text tiny
3. 3.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
4. 4.🔍 Which is the odd one out? (a) labels on every icon (b) strong colour contrast (c) big touch targets (d) fast-flashing lights
5. 5.🔍 Which is the odd one out? (a) text that can grow (b) labels on every icon (c) captions on videos (d) tiny tap areas
6. 6.Which of these helps everyone use the app? (a) big touch targets (b) colour as the only clue (c) fast-flashing lights (d) sudden loud sounds
7. 7.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) makes it harder (b) helps everyone
8. 8.🔍 Which is the odd one out? (a) strong colour contrast (b) fast-flashing lights (c) sudden loud sounds (d) icons with no labels
9. 9.♿ Showing right or wrong only in red and green is a problem for ___. (a) fast typists (b) the battery (c) the server (d) colour-blind users
10. 10.♿ A screen has 9 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
11. 11.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) makes it harder (b) helps everyone
12. 12.Which of these helps everyone use the app? (a) sudden loud sounds (b) tiny tap areas (c) text that can grow (d) icons with no labels
13. 13.♿ A screen has 12 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
14. 14.🔍 Which is the odd one out? (a) sudden loud sounds (b) icons with no labels (c) colour as the only clue (d) big touch targets
15. 15.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 23 px
    Label: 20 px
    Title: 14 px
16. 16.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 13 px
    Title: 23 px
    Label: 23 px
    Caption: 10 px
    Hint: 15 px
17. 17.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
18. 18.Which of these makes the app harder to use? (a) strong colour contrast (b) text that can grow (c) captions on videos (d) sudden loud sounds
19. 19.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 27 px
    Menu: 24 px
    Hint: 13 px
    Body text: 23 px (a) Caption (b) Menu (c) Body text (d) Hint
20. 20.Which of these helps everyone use the app? (a) fast-flashing lights (b) labels on every icon (c) icons with no labels (d) tiny tap areas
21. 21.♿ A screen has 8 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
22. 22.♿ A screen has 9 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
23. 23.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 14 px
    Menu: 19 px
    Title: 16 px
    Hint: 15 px
    Caption: 19 px
24. 24.🔍 Which is the odd one out? (a) labels on every icon (b) sudden loud sounds (c) fast-flashing lights (d) icons with no labels
25. 25.Which of these makes the app harder to use? (a) fast-flashing lights (b) big touch targets (c) strong colour contrast (d) labels on every icon
26. 26.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 23 px
    Caption: 19 px
    Title: 12 px
27. 27.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
28. 28.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
29. 29.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) big touch targets (d) icons with no labels
30. 30.🔍 Which is the odd one out? (a) strong colour contrast (b) captions on videos (c) colour as the only clue (d) big touch targets
31. 31.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
32. 32.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a text label (c) a bright colour (d) a sound
33. 33.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) helps everyone (b) makes it harder
34. 34.Which of these makes the app harder to use? (a) colour as the only clue (b) text that can grow (c) big touch targets (d) labels on every icon
35. 35.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 24 px
    Label: 10 px
    Title: 20 px
    Hint: 25 px (a) Label (b) Body text (c) Hint (d) Title
36. 36.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 17 px
    Label: 10 px
    Body text: 19 px
    Caption: 28 px
    Footer: 17 px (a) Caption (b) Body text (c) Title (d) Label
37. 37.♿ A screen has 11 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
38. 38.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 16 px
    Footer: 18 px
    Hint: 28 px
    Menu: 14 px
    Body text: 19 px (a) Caption (b) Footer (c) Menu (d) Hint
39. 39.True or false: “icons with no labels” makes the app harder to use. (a) False (b) True
40. 40.♿ A screen has 7 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?

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