App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 550 · 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.🔍 Which is the odd one out? (a) strong colour contrast (b) fast-flashing lights (c) labels on every icon (d) captions on videos
2. 2.♿ What does a screen reader do? (a) takes photos (b) makes text tiny (c) reads the screen aloud (d) plays music
3. 3.Which of these helps everyone use the app? (a) captions on videos (b) icons with no labels (c) sudden loud sounds (d) colour as the only clue
4. 4.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) the server (c) fast typists (d) colour-blind users
5. 5.🔍 Which is the odd one out? (a) sudden loud sounds (b) colour as the only clue (c) fast-flashing lights (d) big touch targets
6. 6.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 25 px
   Footer: 17 px
   Caption: 11 px (a) Caption (b) Title (c) Footer
7. 7.Which of these makes the app harder to use? (a) text that can grow (b) labels on every icon (c) icons with no labels (d) captions on videos
8. 8.🔍 Which is the odd one out? (a) captions on videos (b) sudden loud sounds (c) tiny tap areas (d) colour as the only clue
9. 9.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Footer: 22 px
   Menu: 24 px
   Caption: 21 px
10. 10.🔍 Which is the odd one out? (a) strong colour contrast (b) icons with no labels (c) fast-flashing lights (d) colour as the only clue
11. 11.♿ Accessibility means an app works for ___. (a) only the coder (b) only experts (c) everyone (d) nobody
12. 12.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
13. 13.🔍 Which is the odd one out? (a) big touch targets (b) sudden loud sounds (c) captions on videos (d) strong colour contrast
14. 14.Which of these helps everyone use the app? (a) big touch targets (b) fast-flashing lights (c) tiny tap areas (d) colour as the only clue
15. 15.True or false: “strong colour contrast” makes the app harder to use. (a) True (b) False
16. 16.True or false: “captions on videos” helps everyone use the app. (a) False (b) True
17. 17.♿ A screen has 12 icon buttons. Only 9 of them have a text label for screen readers. How many still need a label?
18. 18.♿ A screen has 11 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
19. 19.Which of these makes the app harder to use? (a) strong colour contrast (b) labels on every icon (c) big touch targets (d) fast-flashing lights
20. 20.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 28 px
    Label: 13 px
    Title: 21 px
    Hint: 17 px (a) Title (b) Hint (c) Label (d) Footer
21. 21.♿ A screen has 8 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
22. 22.🔍 Which is the odd one out? (a) tiny tap areas (b) labels on every icon (c) icons with no labels (d) colour as the only clue
23. 23.Which of these helps everyone use the app? (a) labels on every icon (b) sudden loud sounds (c) fast-flashing lights (d) tiny tap areas
24. 24.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
25. 25.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) helps everyone (b) makes it harder
26. 26.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
27. 27.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 24 px
    Title: 18 px
    Footer: 23 px
    Body text: 21 px
    Caption: 20 px
28. 28.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
29. 29.🔍 Which is the odd one out? (a) colour as the only clue (b) captions on videos (c) labels on every icon (d) big touch targets
30. 30.♿ Why add captions to videos? (a) to add colour (b) to slow them down (c) so anyone can follow (d) to hide the sound
31. 31.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 23 px
    Hint: 15 px
    Caption: 19 px
    Body text: 17 px
    Label: 13 px
32. 32.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 14 px
    Hint: 28 px
    Title: 25 px (a) Hint (b) Label (c) Title
33. 33.Which of these helps everyone use the app? (a) fast-flashing lights (b) sudden loud sounds (c) text that can grow (d) icons with no labels
34. 34.Which of these makes the app harder to use? (a) captions on videos (b) colour as the only clue (c) big touch targets (d) text that can grow
35. 35.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
36. 36.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
37. 37.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
38. 38.Which of these makes the app harder to use? (a) big touch targets (b) sudden loud sounds (c) captions on videos (d) strong colour contrast
39. 39.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 23 px
    Title: 23 px
    Label: 13 px
    Footer: 18 px
40. 40.♿ A screen has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?

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