App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 163 · 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.♿ What should every icon-only button have for screen readers? (a) a sound (b) a long animation (c) a bright colour (d) a text label
2. 2.True or false: “colour as the only clue” makes the app harder to use. (a) True (b) False
3. 3.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) helps everyone (b) makes it harder
4. 4.♿ Accessibility means an app works for ___. (a) nobody (b) everyone (c) only the coder (d) only experts
5. 5.🔍 Which is the odd one out? (a) strong colour contrast (b) big touch targets (c) captions on videos (d) sudden loud sounds
6. 6.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
7. 7.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 28 px
   Body text: 26 px
   Menu: 28 px
   Footer: 25 px
   Caption: 12 px (a) Menu (b) Caption (c) Body text (d) Title
8. 8.♿ What does a screen reader do? (a) makes text tiny (b) plays music (c) takes photos (d) reads the screen aloud
9. 9.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) makes it harder (b) helps everyone
10. 10.🔍 Which is the odd one out? (a) big touch targets (b) tiny tap areas (c) icons with no labels (d) sudden loud sounds
11. 11.Which of these helps everyone use the app? (a) captions on videos (b) colour as the only clue (c) tiny tap areas (d) icons with no labels
12. 12.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 22 px
    Hint: 9 px
    Label: 21 px
    Menu: 19 px
    Footer: 16 px (a) Caption (b) Menu (c) Hint (d) Label
13. 13.Which of these makes the app harder to use? (a) text that can grow (b) icons with no labels (c) captions on videos (d) strong colour contrast
14. 14.♿ A screen has 9 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
15. 15.True or false: “captions on videos” helps everyone use the app. (a) True (b) False
16. 16.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 14 px
    Title: 22 px
    Body text: 18 px
    Caption: 22 px
17. 17.True or false: “tiny tap areas” makes the app harder to use. (a) False (b) True
18. 18.♿ Why add captions to videos? (a) to add colour (b) to hide the sound (c) so anyone can follow (d) to slow them down
19. 19.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 20 px
    Menu: 23 px
    Title: 21 px
20. 20.♿ 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
21. 21.Which of these helps everyone use the app? (a) icons with no labels (b) fast-flashing lights (c) labels on every icon (d) colour as the only clue
22. 22.🔍 Which is the odd one out? (a) fast-flashing lights (b) colour as the only clue (c) tiny tap areas (d) captions on videos
23. 23.♿ A screen has 6 icon buttons. Only 5 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?
    Hint: 21 px
    Footer: 23 px
    Title: 15 px
25. 25.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 23 px
    Label: 26 px
    Body text: 19 px
    Hint: 17 px
    Menu: 9 px (a) Label (b) Menu (c) Body text (d) Footer
26. 26.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
27. 27.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
28. 28.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 26 px
    Menu: 22 px
    Footer: 28 px
    Hint: 10 px (a) Hint (b) Footer (c) Menu (d) Body text
30. 30.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 24 px
    Caption: 17 px
    Menu: 23 px
    Label: 21 px
    Title: 13 px
31. 31.♿ A screen has 10 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
32. 32.♿ A screen has 6 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
33. 33.🔍 Which is the odd one out? (a) labels on every icon (b) captions on videos (c) icons with no labels (d) big touch targets
34. 34.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
35. 35.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 27 px
    Footer: 10 px
    Hint: 27 px
    Menu: 19 px
    Title: 20 px (a) Footer (b) Hint (c) Label (d) Menu
36. 36.♿ A screen has 10 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
37. 37.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 22 px
    Body text: 16 px
    Title: 20 px
    Footer: 9 px (a) Title (b) Footer (c) Caption (d) Body text
38. 38.True or false: “big touch targets” helps everyone use the app. (a) True (b) False
39. 39.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 11 px
    Caption: 16 px
    Footer: 13 px
    Menu: 21 px
40. 40.Which of these helps everyone use the app? (a) fast-flashing lights (b) text that can grow (c) colour as the only clue (d) tiny tap areas

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