App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 468 · 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 8 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
2. 2.♿ Why add captions to videos? (a) to slow them down (b) to hide the sound (c) so anyone can follow (d) to add colour
3. 3.🔍 Which is the odd one out? (a) labels on every icon (b) strong colour contrast (c) captions on videos (d) icons with no labels
4. 4.♿ What does a screen reader do? (a) reads the screen aloud (b) makes text tiny (c) plays music (d) takes photos
5. 5.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
6. 6.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a bright colour (c) a sound (d) a text label
7. 7.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
8. 8.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Caption: 22 px
   Label: 23 px
   Hint: 22 px
   Footer: 23 px
   Body text: 12 px
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 10 px
   Label: 18 px
   Menu: 16 px
   Hint: 27 px (a) Title (b) Label (c) Menu (d) Hint
10. 10.🔍 Which is the odd one out? (a) fast-flashing lights (b) strong colour contrast (c) colour as the only clue (d) icons with no labels
11. 11.🔍 Which is the odd one out? (a) icons with no labels (b) colour as the only clue (c) big touch targets (d) tiny tap areas
12. 12.♿ A screen has 10 icon buttons. Only 9 of them have a text label for screen readers. How many still need a label?
13. 13.Which of these helps everyone use the app? (a) colour as the only clue (b) icons with no labels (c) sudden loud sounds (d) labels on every icon
14. 14.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 20 px
    Hint: 19 px
    Body text: 18 px
    Label: 13 px (a) Hint (b) Footer (c) Body text (d) Label
15. 15.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
16. 16.🔍 Which is the odd one out? (a) tiny tap areas (b) fast-flashing lights (c) colour as the only clue (d) labels on every icon
17. 17.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 11 px
    Menu: 16 px
    Hint: 26 px
    Caption: 19 px
    Title: 21 px (a) Menu (b) Hint (c) Caption (d) Footer
18. 18.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
19. 19.♿ A screen has 7 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
20. 20.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
21. 21.♿ 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
22. 22.♿ Accessibility means an app works for ___. (a) everyone (b) nobody (c) only the coder (d) only experts
23. 23.♿ A screen has 11 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
24. 24.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 21 px
    Title: 22 px
    Menu: 16 px
    Caption: 24 px
    Footer: 17 px
25. 25.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 17 px
    Label: 23 px
    Caption: 11 px (a) Caption (b) Footer (c) Label
26. 26.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 20 px
    Hint: 16 px
    Footer: 13 px
    Body text: 16 px
    Label: 15 px
27. 27.Which of these helps everyone use the app? (a) captions on videos (b) colour as the only clue (c) icons with no labels (d) tiny tap areas
28. 28.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 25 px
    Label: 10 px
    Body text: 20 px (a) Body text (b) Menu (c) Label
29. 29.Which of these helps everyone use the app? (a) icons with no labels (b) fast-flashing lights (c) sudden loud sounds (d) strong colour contrast
30. 30.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 15 px
    Footer: 18 px
    Label: 22 px
31. 31.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 16 px
    Menu: 10 px
    Caption: 21 px
32. 32.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 26 px
    Menu: 28 px
    Body text: 18 px
    Hint: 12 px
    Caption: 18 px (a) Hint (b) Body text (c) Menu (d) Label
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 12 px
    Body text: 20 px
    Title: 17 px
    Hint: 24 px
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) big touch targets (b) labels on every icon (c) tiny tap areas (d) text that can grow
36. 36.🔍 Which is the odd one out? (a) big touch targets (b) labels on every icon (c) captions on videos (d) sudden loud sounds
37. 37.♿ A screen has 7 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
38. 38.Which of these makes the app harder to use? (a) captions on videos (b) labels on every icon (c) tiny tap areas (d) strong colour contrast
39. 39.True or false: “colour as the only clue” helps everyone use the app. (a) True (b) False
40. 40.Which of these makes the app harder to use? (a) text that can grow (b) sudden loud sounds (c) captions on videos (d) labels on every icon

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