App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 421 · 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: “strong colour contrast” helps everyone use the app. (a) False (b) True
2. 2.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Footer: 20 px
   Hint: 20 px
   Label: 13 px
   Menu: 21 px
3. 3.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Caption: 21 px
   Body text: 24 px
   Footer: 18 px
   Menu: 21 px
   Label: 12 px (a) Footer (b) Body text (c) Label (d) Caption
4. 4.True or false: “fast-flashing lights” helps everyone use the app. (a) False (b) True
5. 5.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
6. 6.♿ A screen has 11 icon buttons. Only 10 of them have a text label for screen readers. How many still need a label?
7. 7.🔍 Which is the odd one out? (a) strong colour contrast (b) big touch targets (c) icons with no labels (d) labels on every icon
8. 8.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) makes it harder (b) helps everyone
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Body text: 23 px
   Label: 16 px
   Caption: 14 px
   Footer: 22 px
   Hint: 16 px (a) Footer (b) Label (c) Body text (d) Caption
10. 10.♿ Why add captions to videos? (a) so anyone can follow (b) to slow them down (c) to add colour (d) to hide the sound
11. 11.Which of these helps everyone use the app? (a) icons with no labels (b) sudden loud sounds (c) big touch targets (d) tiny tap areas
12. 12.🔍 Which is the odd one out? (a) fast-flashing lights (b) text that can grow (c) sudden loud sounds (d) colour as the only clue
13. 13.♿ Accessibility means an app works for ___. (a) only experts (b) nobody (c) everyone (d) only the coder
14. 14.♿ What should every icon-only button have for screen readers? (a) a bright colour (b) a text label (c) a sound (d) a long animation
15. 15.♿ What does a screen reader do? (a) plays music (b) makes text tiny (c) reads the screen aloud (d) takes photos
16. 16.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
17. 17.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 12 px
    Menu: 18 px
    Hint: 10 px
    Footer: 23 px
    Title: 19 px
18. 18.♿ 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
19. 19.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
20. 20.🔍 Which is the odd one out? (a) text that can grow (b) captions on videos (c) labels on every icon (d) fast-flashing lights
21. 21.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) helps everyone (b) makes it harder
22. 22.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
23. 23.True or false: “captions on videos” helps everyone use the app. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) labels on every icon (b) tiny tap areas (c) sudden loud sounds (d) colour as the only clue
25. 25.True or false: “labels on every icon” makes the app harder to use. (a) False (b) True
26. 26.Which of these makes the app harder to use? (a) captions on videos (b) text that can grow (c) labels on every icon (d) fast-flashing lights
27. 27.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
28. 28.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
29. 29.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 13 px
    Body text: 16 px
    Caption: 18 px
    Footer: 12 px
    Hint: 10 px
30. 30.♿ A screen has 5 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
31. 31.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 20 px
    Hint: 16 px
    Title: 22 px
    Footer: 18 px
32. 32.♿ A screen has 12 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
33. 33.🔍 Which is the odd one out? (a) text that can grow (b) strong colour contrast (c) labels on every icon (d) sudden loud sounds
34. 34.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 15 px
    Label: 21 px
    Body text: 22 px
    Hint: 13 px
35. 35.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 22 px
    Title: 22 px
    Body text: 20 px
    Menu: 10 px
    Footer: 23 px (a) Body text (b) Caption (c) Title (d) Menu
36. 36.Which of these helps everyone use the app? (a) tiny tap areas (b) text that can grow (c) sudden loud sounds (d) fast-flashing lights
37. 37.🔍 Which is the odd one out? (a) big touch targets (b) colour as the only clue (c) captions on videos (d) strong colour contrast
38. 38.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
39. 39.🔍 Which is the odd one out? (a) colour as the only clue (b) fast-flashing lights (c) icons with no labels (d) big touch targets
40. 40.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 26 px
    Label: 28 px
    Title: 12 px (a) Title (b) Caption (c) Label

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