App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 786 · 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.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) fast typists (c) the server (d) colour-blind users
2. 2.🔍 Which is the odd one out? (a) captions on videos (b) big touch targets (c) strong colour contrast (d) fast-flashing lights
3. 3.True or false: “big touch targets” helps everyone use the app. (a) True (b) False
4. 4.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
5. 5.Which of these makes the app harder to use? (a) strong colour contrast (b) sudden loud sounds (c) big touch targets (d) captions on videos
6. 6.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Label: 18 px
   Title: 13 px
   Caption: 18 px
   Menu: 28 px (a) Menu (b) Label (c) Title (d) Caption
7. 7.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
8. 8.Which of these helps everyone use the app? (a) fast-flashing lights (b) icons with no labels (c) sudden loud sounds (d) captions on videos
9. 9.True or false: “fast-flashing lights” helps everyone use the app. (a) False (b) True
10. 10.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 22 px
    Hint: 19 px
    Footer: 10 px
11. 11.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 24 px
    Hint: 21 px
    Label: 18 px
12. 12.♿ Accessibility means an app works for ___. (a) only the coder (b) everyone (c) nobody (d) only experts
13. 13.♿ A screen has 6 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
14. 14.True or false: “colour as the only clue” helps everyone use the app. (a) True (b) False
15. 15.True or false: “captions on videos” makes the app harder to use. (a) True (b) False
16. 16.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 12 px
    Body text: 16 px
    Footer: 16 px
    Hint: 11 px
    Title: 13 px
17. 17.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 17 px
    Footer: 21 px
    Body text: 20 px
    Hint: 14 px
18. 18.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 28 px
    Title: 18 px
    Menu: 10 px
    Caption: 23 px (a) Menu (b) Title (c) Footer (d) Caption
19. 19.True or false: “text that can grow” helps everyone use the app. (a) False (b) True
20. 20.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 10 px
    Label: 21 px
    Menu: 18 px
    Caption: 20 px (a) Menu (b) Footer (c) Caption (d) Label
21. 21.♿ A screen has 8 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
22. 22.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 16 px
    Hint: 15 px
    Title: 20 px
    Menu: 24 px
    Caption: 23 px
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 17 px
    Caption: 17 px
    Title: 18 px
    Label: 10 px (a) Menu (b) Title (c) Label (d) Caption
24. 24.🔍 Which is the odd one out? (a) colour as the only clue (b) sudden loud sounds (c) labels on every icon (d) fast-flashing lights
25. 25.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
26. 26.♿ A screen has 8 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
27. 27.True or false: “icons with no labels” helps everyone use the app. (a) False (b) True
28. 28.True or false: “icons with no labels” makes the app harder to use. (a) False (b) True
29. 29.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 15 px
    Footer: 17 px
    Caption: 23 px
30. 30.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
31. 31.♿ What does a screen reader do? (a) makes text tiny (b) plays music (c) takes photos (d) reads the screen aloud
32. 32.🔍 Which is the odd one out? (a) colour as the only clue (b) tiny tap areas (c) strong colour contrast (d) icons with no labels
33. 33.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) makes it harder (b) helps everyone
34. 34.🔍 Which is the odd one out? (a) text that can grow (b) strong colour contrast (c) colour as the only clue (d) captions on videos
35. 35.🔍 Which is the odd one out? (a) colour as the only clue (b) captions on videos (c) icons with no labels (d) tiny tap areas
36. 36.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 18 px
    Label: 13 px
    Footer: 18 px
    Body text: 18 px
    Title: 23 px
37. 37.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 15 px
    Label: 22 px
    Hint: 14 px
38. 38.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 10 px
    Body text: 12 px
    Hint: 19 px
    Title: 23 px
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 16 px
    Label: 9 px
    Title: 16 px
    Body text: 28 px
    Footer: 24 px (a) Caption (b) Label (c) Title (d) Body text
40. 40.♿ What should every icon-only button have for screen readers? (a) a text label (b) a long animation (c) a sound (d) a bright colour

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