App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 313 · 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) fast typists (b) the server (c) colour-blind users (d) the battery
2. 2.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
3. 3.True or false: “tiny tap areas” makes the app harder to use. (a) False (b) True
4. 4.♿ A screen has 11 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
5. 5.True or false: “fast-flashing lights” makes the app harder to use. (a) False (b) True
6. 6.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Menu: 13 px
   Footer: 16 px
   Hint: 23 px
   Title: 17 px
7. 7.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Title: 14 px
   Hint: 11 px
   Body text: 13 px
8. 8.🔍 Which is the odd one out? (a) strong colour contrast (b) labels on every icon (c) big touch targets (d) fast-flashing lights
9. 9.🔍 Which is the odd one out? (a) colour as the only clue (b) fast-flashing lights (c) text that can grow (d) icons with no labels
10. 10.♿ Why add captions to videos? (a) so anyone can follow (b) to hide the sound (c) to add colour (d) to slow them down
11. 11.♿ What does a screen reader do? (a) takes photos (b) plays music (c) reads the screen aloud (d) makes text tiny
12. 12.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a text label (c) a bright colour (d) a sound
13. 13.True or false: “labels on every icon” helps everyone use the app. (a) True (b) False
14. 14.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) helps everyone (b) makes it harder
15. 15.Which of these helps everyone use the app? (a) fast-flashing lights (b) tiny tap areas (c) icons with no labels (d) strong colour contrast
16. 16.True or false: “text that can grow” helps everyone use the app. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) tiny tap areas (b) icons with no labels (c) fast-flashing lights (d) big touch targets
18. 18.True or false: “text that can grow” makes the app harder to use. (a) False (b) True
19. 19.True or false: “captions on videos” makes the app harder to use. (a) False (b) True
20. 20.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 21 px
    Hint: 28 px
    Caption: 22 px
    Footer: 9 px (a) Hint (b) Title (c) Caption (d) Footer
21. 21.True or false: “icons with no labels” helps everyone use the app. (a) True (b) False
22. 22.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) text that can grow (d) fast-flashing lights
23. 23.Which of these makes the app harder to use? (a) strong colour contrast (b) sudden loud sounds (c) captions on videos (d) big touch targets
24. 24.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 20 px
    Footer: 21 px
    Hint: 13 px
    Title: 18 px
25. 25.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
26. 26.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
27. 27.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
28. 28.Which of these makes the app harder to use? (a) labels on every icon (b) big touch targets (c) icons with no labels (d) text that can grow
29. 29.Which of these makes the app harder to use? (a) strong colour contrast (b) labels on every icon (c) tiny tap areas (d) text that can grow
30. 30.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 28 px
    Footer: 18 px
    Label: 16 px
    Body text: 12 px (a) Label (b) Body text (c) Footer (d) Hint
31. 31.♿ A screen has 9 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
32. 32.♿ A screen has 10 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
33. 33.♿ Accessibility means an app works for ___. (a) only experts (b) only the coder (c) nobody (d) everyone
34. 34.True or false: “strong colour contrast” helps everyone use the app. (a) True (b) False
35. 35.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 12 px
    Footer: 24 px
    Title: 14 px
    Menu: 11 px
36. 36.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 26 px
    Label: 11 px
    Menu: 23 px
    Footer: 18 px (a) Menu (b) Body text (c) Footer (d) Label
37. 37.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 18 px
    Title: 18 px
    Caption: 23 px
    Label: 21 px
38. 38.True or false: “captions on videos” helps everyone use the app. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) fast-flashing lights (b) tiny tap areas (c) strong colour contrast (d) icons with no labels
40. 40.🔍 Which is the odd one out? (a) captions on videos (b) icons with no labels (c) colour as the only clue (d) fast-flashing lights

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