App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 120 · 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: “colour as the only clue” helps everyone use the app. (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: 15 px
   Title: 13 px
   Menu: 20 px
   Caption: 14 px
3. 3.♿ Why add captions to videos? (a) to hide the sound (b) so anyone can follow (c) to slow them down (d) to add colour
4. 4.Which of these helps everyone use the app? (a) sudden loud sounds (b) icons with no labels (c) colour as the only clue (d) big touch targets
5. 5.♿ What should every icon-only button have for screen readers? (a) a sound (b) a text label (c) a long animation (d) a bright colour
6. 6.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) sudden loud sounds (b) strong colour contrast (c) fast-flashing lights (d) tiny tap areas
8. 8.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
9. 9.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Title: 22 px
   Menu: 21 px
   Footer: 12 px
10. 10.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 22 px
    Title: 14 px
    Menu: 21 px
    Body text: 17 px (a) Title (b) Menu (c) Label (d) Body text
11. 11.♿ A screen has 10 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
12. 12.♿ What does a screen reader do? (a) takes photos (b) plays music (c) reads the screen aloud (d) makes text tiny
13. 13.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 17 px
    Hint: 14 px
    Footer: 14 px
    Label: 18 px
14. 14.True or false: “big touch targets” helps everyone use the app. (a) False (b) True
15. 15.Which of these makes the app harder to use? (a) captions on videos (b) text that can grow (c) icons with no labels (d) strong colour contrast
16. 16.♿ A screen has 10 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
17. 17.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
18. 18.Which of these makes the app harder to use? (a) strong colour contrast (b) big touch targets (c) sudden loud sounds (d) captions on videos
19. 19.True or false: “text that can grow” helps everyone use the app. (a) True (b) False
20. 20.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) tiny tap areas (d) big touch targets
21. 21.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 15 px
    Caption: 10 px
    Hint: 22 px
22. 22.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 10 px
    Label: 27 px
    Menu: 20 px (a) Menu (b) Title (c) Label
23. 23.🔍 Which is the odd one out? (a) strong colour contrast (b) big touch targets (c) labels on every icon (d) fast-flashing lights
24. 24.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
25. 25.🔍 Which is the odd one out? (a) tiny tap areas (b) colour as the only clue (c) icons with no labels (d) big touch targets
26. 26.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 20 px
    Footer: 11 px
    Menu: 24 px (a) Footer (b) Menu (c) Body text
27. 27.♿ A screen has 12 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
28. 28.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 20 px
    Label: 20 px
    Caption: 18 px
    Title: 11 px
    Body text: 12 px
29. 29.True or false: “captions on videos” makes the app harder to use. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) fast-flashing lights (b) icons with no labels (c) colour as the only clue (d) captions on videos
31. 31.🔍 Which is the odd one out? (a) labels on every icon (b) sudden loud sounds (c) strong colour contrast (d) captions on videos
32. 32.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 24 px
    Menu: 19 px
    Hint: 15 px
    Body text: 13 px
    Footer: 11 px
33. 33.♿ A screen has 12 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
34. 34.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) colour-blind users (c) fast typists (d) the server
35. 35.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 23 px
    Body text: 21 px
    Footer: 10 px (a) Body text (b) Hint (c) Footer
36. 36.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 14 px
    Caption: 22 px
    Title: 21 px (a) Caption (b) Title (c) Hint
37. 37.♿ A screen has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
38. 38.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
39. 39.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
40. 40.Which of these helps everyone use the app? (a) tiny tap areas (b) strong colour contrast (c) colour as the only clue (d) sudden loud sounds

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