App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 133 · 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: “labels on every icon” makes the app harder to use. (a) True (b) False
2. 2.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Body text: 23 px
   Footer: 22 px
   Menu: 17 px
   Caption: 12 px
3. 3.Which of these makes the app harder to use? (a) big touch targets (b) captions on videos (c) text that can grow (d) fast-flashing lights
4. 4.♿ Showing right or wrong only in red and green is a problem for ___. (a) fast typists (b) colour-blind users (c) the battery (d) the server
5. 5.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
6. 6.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 27 px
   Body text: 20 px
   Label: 27 px
   Title: 20 px
   Caption: 10 px (a) Label (b) Footer (c) Caption (d) Body text
7. 7.🔍 Which is the odd one out? (a) text that can grow (b) captions on videos (c) strong colour contrast (d) icons with no labels
8. 8.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
9. 9.♿ A screen has 10 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
10. 10.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 15 px
    Menu: 24 px
    Caption: 12 px
11. 11.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 12 px
    Menu: 27 px
    Label: 26 px
    Hint: 23 px
    Caption: 17 px (a) Footer (b) Label (c) Hint (d) Menu
12. 12.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
13. 13.🔍 Which is the odd one out? (a) icons with no labels (b) tiny tap areas (c) labels on every icon (d) colour as the only clue
14. 14.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
15. 15.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
16. 16.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 13 px
    Menu: 16 px
    Hint: 12 px
    Body text: 11 px
17. 17.🔍 Which is the odd one out? (a) big touch targets (b) labels on every icon (c) captions on videos (d) colour as the only clue
18. 18.♿ A screen has 8 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
19. 19.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 24 px
    Title: 17 px
    Footer: 12 px
    Menu: 12 px
20. 20.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 24 px
    Footer: 21 px
    Caption: 13 px
    Title: 17 px (a) Title (b) Caption (c) Label (d) Footer
21. 21.🔍 Which is the odd one out? (a) big touch targets (b) sudden loud sounds (c) captions on videos (d) text that can grow
22. 22.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 25 px
    Title: 11 px
    Footer: 16 px
    Label: 20 px (a) Footer (b) Label (c) Body text (d) Title
23. 23.♿ What does a screen reader do? (a) plays music (b) makes text tiny (c) takes photos (d) reads the screen aloud
24. 24.♿ A screen has 12 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
25. 25.♿ A screen has 8 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
26. 26.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 23 px
    Title: 12 px
    Body text: 19 px
27. 27.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 23 px
    Body text: 16 px
    Hint: 10 px
    Footer: 22 px (a) Body text (b) Hint (c) Title (d) Footer
28. 28.♿ Why add captions to videos? (a) to add colour (b) so anyone can follow (c) to slow them down (d) to hide the sound
29. 29.🔍 Which is the odd one out? (a) text that can grow (b) tiny tap areas (c) captions on videos (d) strong colour contrast
30. 30.♿ A screen has 7 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
31. 31.🔍 Which is the odd one out? (a) big touch targets (b) fast-flashing lights (c) icons with no labels (d) colour as the only clue
32. 32.🔍 Which is the odd one out? (a) colour as the only clue (b) captions on videos (c) fast-flashing lights (d) icons with no labels
33. 33.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 16 px
    Body text: 26 px
    Title: 13 px
    Caption: 19 px (a) Menu (b) Title (c) Body text (d) Caption
35. 35.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 15 px
    Footer: 16 px
    Label: 10 px
    Menu: 13 px
36. 36.True or false: “tiny tap areas” helps everyone use the app. (a) True (b) False
37. 37.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
38. 38.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
39. 39.True or false: “big touch targets” helps everyone use the app. (a) False (b) True
40. 40.Which of these makes the app harder to use? (a) captions on videos (b) labels on every icon (c) strong colour contrast (d) tiny tap areas

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