App Dev Worksheet: Accessibility

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

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