App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 652 · 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.♿ Why add captions to videos? (a) to slow them down (b) to add colour (c) to hide the sound (d) so anyone can follow
2. 2.♿ A screen has 11 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
3. 3.🔍 Which is the odd one out? (a) colour as the only clue (b) sudden loud sounds (c) tiny tap areas (d) big touch targets
4. 4.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Footer: 23 px
   Hint: 11 px
   Title: 13 px
5. 5.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Menu: 18 px
   Hint: 21 px
   Title: 16 px
   Label: 13 px
   Body text: 12 px
6. 6.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Menu: 10 px
   Body text: 21 px
   Label: 19 px
   Caption: 22 px (a) Label (b) Body text (c) Caption (d) Menu
7. 7.True or false: “colour as the only clue” helps everyone use the app. (a) False (b) True
8. 8.Which of these helps everyone use the app? (a) icons with no labels (b) labels on every icon (c) fast-flashing lights (d) tiny tap areas
9. 9.True or false: “text that can grow” helps everyone use the app. (a) False (b) True
10. 10.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 28 px
    Hint: 28 px
    Title: 12 px (a) Footer (b) Title (c) Hint
11. 11.🔍 Which is the odd one out? (a) captions on videos (b) labels on every icon (c) icons with no labels (d) strong colour contrast
12. 12.Which of these helps everyone use the app? (a) strong colour contrast (b) icons with no labels (c) fast-flashing lights (d) sudden loud sounds
13. 13.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
14. 14.True or false: “tiny tap areas” helps everyone use the app. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) text that can grow (b) tiny tap areas (c) sudden loud sounds (d) colour as the only clue
16. 16.♿ Accessibility means an app works for ___. (a) everyone (b) only the coder (c) nobody (d) only experts
17. 17.True or false: “colour as the only clue” makes the app harder to use. (a) True (b) False
18. 18.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 17 px
    Label: 12 px
    Body text: 23 px
    Menu: 10 px
19. 19.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 16 px
    Hint: 12 px
    Label: 22 px
    Body text: 19 px
20. 20.Which of these helps everyone use the app? (a) icons with no labels (b) sudden loud sounds (c) captions on videos (d) fast-flashing lights
21. 21.♿ A screen has 7 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
22. 22.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 12 px
    Menu: 19 px
    Caption: 27 px
    Body text: 19 px (a) Menu (b) Body text (c) Caption (d) Title
23. 23.Which of these helps everyone use the app? (a) fast-flashing lights (b) colour as the only clue (c) big touch targets (d) tiny tap areas
24. 24.🔍 Which is the odd one out? (a) sudden loud sounds (b) big touch targets (c) strong colour contrast (d) captions on videos
25. 25.True or false: “strong colour contrast” helps everyone use the app. (a) True (b) False
26. 26.Which of these makes the app harder to use? (a) big touch targets (b) colour as the only clue (c) text that can grow (d) labels on every icon
27. 27.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) fast typists (c) the server (d) colour-blind users
28. 28.🔍 Which is the odd one out? (a) tiny tap areas (b) labels on every icon (c) text that can grow (d) captions on videos
29. 29.Which of these makes the app harder to use? (a) fast-flashing lights (b) labels on every icon (c) captions on videos (d) big touch targets
30. 30.♿ What does a screen reader do? (a) reads the screen aloud (b) plays music (c) takes photos (d) makes text tiny
31. 31.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 25 px
    Footer: 12 px
    Title: 25 px
    Label: 21 px (a) Title (b) Label (c) Footer (d) Caption
32. 32.🔍 Which is the odd one out? (a) captions on videos (b) tiny tap areas (c) icons with no labels (d) colour as the only clue
33. 33.♿ A screen has 6 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
34. 34.🔍 Which is the odd one out? (a) captions on videos (b) strong colour contrast (c) labels on every icon (d) colour as the only clue
35. 35.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 23 px
    Menu: 21 px
    Title: 19 px
    Hint: 10 px
    Label: 23 px
36. 36.Which of these helps everyone use the app? (a) text that can grow (b) colour as the only clue (c) icons with no labels (d) sudden loud sounds
37. 37.True or false: “icons with no labels” makes the app harder to use. (a) False (b) True
38. 38.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a sound (c) a bright colour (d) a text label
39. 39.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
40. 40.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 17 px
    Label: 13 px
    Caption: 16 px
    Hint: 11 px

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students