App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 391 · 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” makes the app harder to use. (a) True (b) False
2. 2.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Hint: 16 px
   Footer: 23 px
   Caption: 14 px (a) Footer (b) Hint (c) Caption
3. 3.🔍 Which is the odd one out? (a) captions on videos (b) sudden loud sounds (c) strong colour contrast (d) text that can grow
4. 4.♿ What should every icon-only button have for screen readers? (a) a sound (b) a text label (c) a bright colour (d) a long animation
5. 5.🔍 Which is the odd one out? (a) labels on every icon (b) strong colour contrast (c) text that can grow (d) tiny tap areas
6. 6.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Body text: 24 px
   Label: 12 px
   Caption: 18 px
   Menu: 19 px
   Hint: 20 px
7. 7.Which of these helps everyone use the app? (a) labels on every icon (b) colour as the only clue (c) fast-flashing lights (d) sudden loud sounds
8. 8.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Hint: 17 px
   Label: 25 px
   Body text: 24 px
   Title: 11 px
   Caption: 22 px (a) Hint (b) Label (c) Body text (d) Title
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.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 12 px
    Menu: 22 px
    Body text: 22 px
    Footer: 16 px (a) Menu (b) Label (c) Body text (d) Footer
11. 11.Which of these helps everyone use the app? (a) colour as the only clue (b) captions on videos (c) sudden loud sounds (d) tiny tap areas
12. 12.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
13. 13.🔍 Which is the odd one out? (a) colour as the only clue (b) big touch targets (c) icons with no labels (d) sudden loud sounds
14. 14.♿ What does a screen reader do? (a) makes text tiny (b) reads the screen aloud (c) takes photos (d) plays music
15. 15.♿ A screen has 6 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
16. 16.Which of these helps everyone use the app? (a) sudden loud sounds (b) fast-flashing lights (c) big touch targets (d) tiny tap areas
17. 17.🔍 Which is the odd one out? (a) strong colour contrast (b) labels on every icon (c) captions on videos (d) icons with no labels
18. 18.Which of these makes the app harder to use? (a) text that can grow (b) captions on videos (c) labels on every icon (d) colour as the only clue
19. 19.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 15 px
    Caption: 13 px
    Label: 12 px
    Menu: 10 px
20. 20.♿ 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
21. 21.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 26 px
    Menu: 16 px
    Label: 12 px
    Hint: 21 px (a) Menu (b) Body text (c) Label (d) Hint
22. 22.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) helps everyone (b) makes it harder
23. 23.♿ Accessibility means an app works for ___. (a) only the coder (b) nobody (c) everyone (d) only experts
24. 24.True or false: “captions on videos” makes the app harder to use. (a) True (b) False
25. 25.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 18 px
    Hint: 18 px
    Title: 22 px
    Label: 20 px
    Caption: 11 px (a) Title (b) Caption (c) Hint (d) Body text
26. 26.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
27. 27.True or false: “big touch targets” makes the app harder to use. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) labels on every icon (b) tiny tap areas (c) colour as the only clue (d) fast-flashing lights
29. 29.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 16 px
    Title: 16 px
    Label: 17 px
    Caption: 21 px
    Hint: 14 px
30. 30.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
31. 31.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 23 px
    Title: 12 px
    Caption: 19 px
32. 32.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 11 px
    Caption: 18 px
    Title: 18 px
    Hint: 17 px
    Menu: 26 px (a) Hint (b) Body text (c) Title (d) Caption
33. 33.True or false: “sudden loud sounds” helps everyone use the app. (a) False (b) True
34. 34.Which of these makes the app harder to use? (a) captions on videos (b) text that can grow (c) tiny tap areas (d) strong colour contrast
35. 35.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 20 px
    Menu: 24 px
    Hint: 17 px
    Title: 18 px
36. 36.Which of these helps everyone use the app? (a) icons with no labels (b) colour as the only clue (c) fast-flashing lights (d) text that can grow
37. 37.🔍 Which is the odd one out? (a) big touch targets (b) fast-flashing lights (c) labels on every icon (d) strong colour contrast
38. 38.True or false: “sudden loud sounds” makes the app harder to use. (a) False (b) True
39. 39.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 21 px
    Body text: 12 px
    Hint: 16 px
40. 40.♿ A screen has 8 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?

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