App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 451 · 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. How many texts on this screen are too small?
   Caption: 22 px
   Footer: 19 px
   Body text: 18 px
   Title: 13 px
2. 2.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
3. 3.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Body text: 14 px
   Caption: 10 px
   Menu: 14 px
   Label: 14 px
4. 4.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Caption: 19 px
   Hint: 28 px
   Label: 18 px
   Title: 13 px (a) Hint (b) Label (c) Caption (d) Title
5. 5.🔍 Which is the odd one out? (a) icons with no labels (b) captions on videos (c) big touch targets (d) strong colour contrast
6. 6.🔍 Which is the odd one out? (a) strong colour contrast (b) captions on videos (c) text that can grow (d) tiny tap areas
7. 7.Which of these helps everyone use the app? (a) tiny tap areas (b) sudden loud sounds (c) labels on every icon (d) fast-flashing lights
8. 8.Which of these makes the app harder to use? (a) labels on every icon (b) text that can grow (c) fast-flashing lights (d) big touch targets
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 9 px
   Hint: 17 px
   Label: 24 px (a) Label (b) Footer (c) Hint
10. 10.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) captions on videos (b) tiny tap areas (c) colour as the only clue (d) fast-flashing lights
12. 12.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
13. 13.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 13 px
    Menu: 25 px
    Hint: 17 px (a) Caption (b) Menu (c) Hint
14. 14.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 21 px
    Footer: 15 px
    Caption: 22 px
    Menu: 13 px
    Label: 19 px
15. 15.♿ What does a screen reader do? (a) makes text tiny (b) reads the screen aloud (c) takes photos (d) plays music
16. 16.♿ Why add captions to videos? (a) so anyone can follow (b) to hide the sound (c) to add colour (d) to slow them down
17. 17.♿ A screen has 11 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
18. 18.🔍 Which is the odd one out? (a) strong colour contrast (b) captions on videos (c) sudden loud sounds (d) big touch targets
19. 19.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 10 px
    Caption: 17 px
    Title: 18 px (a) Caption (b) Footer (c) Title
20. 20.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
21. 21.♿ What should every icon-only button have for screen readers? (a) a text label (b) a sound (c) a bright colour (d) a long animation
22. 22.True or false: “colour as the only clue” makes the app harder to use. (a) False (b) True
23. 23.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) makes it harder (b) helps everyone
24. 24.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 16 px
    Label: 25 px
    Footer: 11 px
    Hint: 23 px (a) Label (b) Hint (c) Footer (d) Body text
25. 25.Which of these makes the app harder to use? (a) strong colour contrast (b) captions on videos (c) icons with no labels (d) labels on every icon
26. 26.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
27. 27.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
28. 28.True or false: “strong colour contrast” makes the app harder to use. (a) True (b) False
29. 29.True or false: “text that can grow” helps everyone use the app. (a) True (b) False
30. 30.True or false: “tiny tap areas” makes the app harder to use. (a) False (b) True
31. 31.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 22 px
    Menu: 22 px
    Footer: 25 px
    Hint: 9 px (a) Hint (b) Footer (c) Title (d) Menu
32. 32.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 12 px
    Caption: 22 px
    Footer: 13 px
    Hint: 11 px
    Body text: 17 px
33. 33.True or false: “big touch targets” makes the app harder to use. (a) False (b) True
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 20 px
    Label: 12 px
    Caption: 20 px
    Body text: 22 px
    Footer: 21 px (a) Menu (b) Body text (c) Label (d) Caption
35. 35.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
36. 36.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Footer: 19 px
    Body text: 21 px
    Title: 16 px
    Caption: 13 px
37. 37.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 28 px
    Hint: 24 px
    Title: 14 px (a) Title (b) Hint (c) Label
38. 38.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
39. 39.♿ A screen has 7 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
40. 40.True or false: “tiny tap areas” helps everyone use the app. (a) False (b) True

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