App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 443 · 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: “big touch targets” makes the app harder to use. (a) False (b) True
2. 2.Which of these makes the app harder to use? (a) sudden loud sounds (b) labels on every icon (c) text that can grow (d) strong colour contrast
3. 3.♿ What does a screen reader do? (a) takes photos (b) reads the screen aloud (c) plays music (d) makes text tiny
4. 4.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
5. 5.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Caption: 24 px
   Label: 17 px
   Footer: 26 px
   Title: 11 px (a) Label (b) Caption (c) Footer (d) Title
6. 6.True or false: “strong colour contrast” makes the app harder to use. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) labels on every icon (b) text that can grow (c) fast-flashing lights (d) strong colour contrast
8. 8.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Title: 21 px
   Label: 12 px
   Footer: 12 px
   Body text: 12 px
   Caption: 15 px
9. 9.True or false: “colour as the only clue” makes the app harder to use. (a) True (b) False
10. 10.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
11. 11.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 14 px
    Body text: 17 px
    Label: 26 px (a) Hint (b) Label (c) Body text
12. 12.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
13. 13.Which of these helps everyone use the app? (a) colour as the only clue (b) icons with no labels (c) fast-flashing lights (d) labels on every icon
14. 14.🔍 Which is the odd one out? (a) labels on every icon (b) text that can grow (c) colour as the only clue (d) captions on videos
15. 15.Which of these helps everyone use the app? (a) colour as the only clue (b) sudden loud sounds (c) icons with no labels (d) captions on videos
16. 16.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 21 px
    Caption: 10 px
    Title: 24 px
    Footer: 24 px
    Label: 17 px
17. 17.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
18. 18.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
19. 19.Which of these helps everyone use the app? (a) icons with no labels (b) tiny tap areas (c) colour as the only clue (d) big touch targets
20. 20.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
21. 21.♿ A screen has 6 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
22. 22.🔍 Which is the odd one out? (a) fast-flashing lights (b) colour as the only clue (c) tiny tap areas (d) labels on every icon
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 9 px
    Footer: 21 px
    Hint: 18 px (a) Caption (b) Footer (c) Hint
24. 24.Which of these helps everyone use the app? (a) icons with no labels (b) text that can grow (c) fast-flashing lights (d) sudden loud sounds
25. 25.♿ Why add captions to videos? (a) to hide the sound (b) to add colour (c) so anyone can follow (d) to slow them down
26. 26.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) big touch targets (b) tiny tap areas (c) strong colour contrast (d) captions on videos
28. 28.🔍 Which is the odd one out? (a) tiny tap areas (b) sudden loud sounds (c) fast-flashing lights (d) big touch targets
29. 29.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) fast typists (c) colour-blind users (d) the server
30. 30.Which of these makes the app harder to use? (a) text that can grow (b) colour as the only clue (c) captions on videos (d) big touch targets
31. 31.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 20 px
    Footer: 21 px
    Hint: 15 px
32. 32.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 10 px
    Footer: 25 px
    Title: 21 px (a) Title (b) Label (c) Footer
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 18 px
    Caption: 12 px
    Body text: 12 px
34. 34.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 24 px
    Menu: 16 px
    Hint: 23 px
    Label: 10 px
    Title: 13 px
35. 35.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
36. 36.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 17 px
    Body text: 27 px
    Label: 14 px
    Title: 19 px
    Footer: 24 px (a) Title (b) Body text (c) Label (d) Caption
37. 37.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 18 px
    Title: 16 px
    Footer: 12 px (a) Hint (b) Footer (c) Title
38. 38.♿ Accessibility means an app works for ___. (a) only experts (b) only the coder (c) nobody (d) everyone
39. 39.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) makes it harder (b) helps everyone
40. 40.♿ A screen has 12 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?

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