App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 492 · 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.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
2. 2.Which of these helps everyone use the app? (a) tiny tap areas (b) colour as the only clue (c) big touch targets (d) fast-flashing lights
3. 3.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 24 px
   Body text: 24 px
   Caption: 14 px
   Menu: 16 px
   Title: 22 px (a) Body text (b) Footer (c) Menu (d) Caption
4. 4.🔍 Which is the odd one out? (a) big touch targets (b) colour as the only clue (c) strong colour contrast (d) text that can grow
5. 5.True or false: “text that can grow” helps everyone use the app. (a) True (b) False
6. 6.♿ What does a screen reader do? (a) plays music (b) takes photos (c) makes text tiny (d) reads the screen aloud
7. 7.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) colour-blind users (c) the server (d) fast typists
8. 8.♿ What should every icon-only button have for screen readers? (a) a text label (b) a long animation (c) a bright colour (d) a sound
9. 9.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Hint: 22 px
   Footer: 10 px
   Body text: 15 px
   Caption: 19 px
   Title: 18 px
10. 10.🔍 Which is the odd one out? (a) big touch targets (b) icons with no labels (c) text that can grow (d) strong colour contrast
11. 11.Which of these helps everyone use the app? (a) sudden loud sounds (b) tiny tap areas (c) captions on videos (d) icons with no labels
12. 12.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 14 px
    Body text: 14 px
    Menu: 18 px
    Title: 21 px
    Footer: 11 px
13. 13.🔍 Which is the odd one out? (a) captions on videos (b) labels on every icon (c) tiny tap areas (d) text that can grow
14. 14.True or false: “sudden loud sounds” helps everyone use the app. (a) False (b) True
15. 15.♿ A screen has 9 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
16. 16.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 20 px
    Footer: 10 px
    Caption: 23 px
    Label: 12 px
    Title: 16 px
17. 17.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 25 px
    Body text: 20 px
    Title: 10 px (a) Caption (b) Body text (c) Title
18. 18.♿ A screen has 11 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) tiny tap areas (b) big touch targets (c) sudden loud sounds (d) colour as the only clue
20. 20.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 16 px
    Footer: 11 px
    Body text: 24 px
    Menu: 23 px
    Hint: 24 px
21. 21.♿ A screen has 12 icon buttons. Only 10 of them have a text label for screen readers. How many still need a label?
22. 22.♿ Why add captions to videos? (a) so anyone can follow (b) to slow them down (c) to hide the sound (d) to add colour
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 23 px
    Label: 9 px
    Caption: 17 px (a) Footer (b) Label (c) Caption
24. 24.Which of these helps everyone use the app? (a) icons with no labels (b) colour as the only clue (c) sudden loud sounds (d) text that can grow
25. 25.🔍 Which is the odd one out? (a) text that can grow (b) colour as the only clue (c) fast-flashing lights (d) icons with no labels
26. 26.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
27. 27.Which of these helps everyone use the app? (a) tiny tap areas (b) labels on every icon (c) fast-flashing lights (d) colour as the only clue
28. 28.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 20 px
    Footer: 28 px
    Body text: 14 px (a) Body text (b) Hint (c) Footer
29. 29.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
30. 30.True or false: “tiny tap areas” makes the app harder to use. (a) True (b) False
31. 31.True or false: “colour as the only clue” helps everyone use the app. (a) True (b) False
32. 32.True or false: “labels on every icon” makes the app harder to use. (a) False (b) True
33. 33.♿ Accessibility means an app works for ___. (a) nobody (b) only experts (c) everyone (d) only the coder
34. 34.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
35. 35.♿ A screen has 11 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
36. 36.True or false: “strong colour contrast” helps everyone use the app. (a) True (b) False
37. 37.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 22 px
    Caption: 11 px
    Hint: 13 px
38. 38.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 24 px
    Hint: 10 px
    Body text: 14 px
    Title: 13 px
39. 39.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 19 px
    Footer: 15 px
    Body text: 11 px
    Title: 13 px
    Hint: 13 px
40. 40.Which of these makes the app harder to use? (a) strong colour contrast (b) captions on videos (c) big touch targets (d) colour as the only clue

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