App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 765 · 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.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) text that can grow (d) sudden loud sounds
2. 2.♿ A screen has 7 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
3. 3.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Menu: 24 px
   Caption: 27 px
   Body text: 24 px
   Hint: 20 px
   Label: 9 px (a) Label (b) Menu (c) Caption (d) Body text
4. 4.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
5. 5.♿ Showing right or wrong only in red and green is a problem for ___. (a) fast typists (b) colour-blind users (c) the server (d) the battery
6. 6.Which of these helps everyone use the app? (a) icons with no labels (b) captions on videos (c) tiny tap areas (d) fast-flashing lights
7. 7.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Menu: 17 px
   Title: 9 px
   Label: 28 px (a) Label (b) Menu (c) Title
8. 8.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
9. 9.♿ Why add captions to videos? (a) to slow them down (b) so anyone can follow (c) to add colour (d) to hide the sound
10. 10.🔍 Which is the odd one out? (a) strong colour contrast (b) big touch targets (c) colour as the only clue (d) text that can grow
11. 11.♿ A screen has 7 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
12. 12.True or false: “icons with no labels” helps everyone use the app. (a) True (b) False
13. 13.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 22 px
    Label: 24 px
    Title: 22 px
    Body text: 13 px (a) Title (b) Body text (c) Menu (d) Label
14. 14.🔍 Which is the odd one out? (a) sudden loud sounds (b) tiny tap areas (c) fast-flashing lights (d) captions on videos
15. 15.🔍 Which is the odd one out? (a) icons with no labels (b) tiny tap areas (c) strong colour contrast (d) colour as the only clue
16. 16.Which of these helps everyone use the app? (a) icons with no labels (b) sudden loud sounds (c) strong colour contrast (d) tiny tap areas
17. 17.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 28 px
    Label: 26 px
    Menu: 9 px (a) Menu (b) Label (c) Title
18. 18.♿ A screen has 10 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
19. 19.🔍 Which is the odd one out? (a) big touch targets (b) fast-flashing lights (c) colour as the only clue (d) sudden loud sounds
20. 20.🔍 Which is the odd one out? (a) fast-flashing lights (b) text that can grow (c) colour as the only clue (d) icons with no labels
21. 21.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 24 px
    Body text: 23 px
    Title: 18 px
    Footer: 15 px
22. 22.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 9 px
    Caption: 22 px
    Body text: 23 px (a) Hint (b) Body text (c) Caption
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 20 px
    Label: 10 px
    Caption: 19 px
    Title: 18 px
    Body text: 20 px (a) Label (b) Hint (c) Caption (d) Title
24. 24.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
25. 25.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 9 px
    Body text: 26 px
    Footer: 18 px
    Title: 17 px (a) Footer (b) Hint (c) Body text (d) Title
26. 26.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
27. 27.♿ Accessibility means an app works for ___. (a) nobody (b) only experts (c) only the coder (d) everyone
28. 28.True or false: “tiny tap areas” makes the app harder to use. (a) False (b) True
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 17 px
    Title: 20 px
    Footer: 9 px
    Menu: 22 px
    Caption: 28 px (a) Footer (b) Body text (c) Menu (d) Title
30. 30.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 24 px
    Label: 20 px
    Body text: 19 px
    Menu: 12 px
31. 31.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 21 px
    Title: 9 px
    Label: 26 px
    Menu: 25 px (a) Label (b) Menu (c) Title (d) Caption
32. 32.Which of these helps everyone use the app? (a) icons with no labels (b) labels on every icon (c) tiny tap areas (d) fast-flashing lights
33. 33.🔍 Which is the odd one out? (a) icons with no labels (b) text that can grow (c) strong colour contrast (d) big touch targets
34. 34.Which of these helps everyone use the app? (a) big touch targets (b) sudden loud sounds (c) icons with no labels (d) fast-flashing lights
35. 35.♿ What should every icon-only button have for screen readers? (a) a bright colour (b) a text label (c) a long animation (d) a sound
36. 36.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
37. 37.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
38. 38.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 12 px
    Menu: 19 px
    Title: 20 px (a) Menu (b) Title (c) Caption
39. 39.True or false: “captions on videos” helps everyone use the app. (a) True (b) False
40. 40.Which of these makes the app harder to use? (a) text that can grow (b) big touch targets (c) fast-flashing lights (d) strong colour contrast

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