App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 325 · 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: sudden loud sounds? (a) makes it harder (b) helps everyone
2. 2.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Hint: 24 px
   Body text: 16 px
   Menu: 12 px
3. 3.♿ Why add captions to videos? (a) to add colour (b) so anyone can follow (c) to hide the sound (d) to slow them down
4. 4.Which of these helps everyone use the app? (a) icons with no labels (b) labels on every icon (c) fast-flashing lights (d) colour as the only clue
5. 5.True or false: “fast-flashing lights” makes the app harder to use. (a) False (b) True
6. 6.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Footer: 23 px
   Body text: 13 px
   Title: 20 px
7. 7.🔍 Which is the odd one out? (a) fast-flashing lights (b) captions on videos (c) text that can grow (d) big touch targets
8. 8.Which of these makes the app harder to use? (a) tiny tap areas (b) labels on every icon (c) strong colour contrast (d) captions on videos
9. 9.♿ A screen has 6 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
10. 10.True or false: “strong colour contrast” makes the app harder to use. (a) True (b) False
11. 11.Which of these makes the app harder to use? (a) colour as the only clue (b) labels on every icon (c) strong colour contrast (d) big touch targets
12. 12.♿ A screen has 11 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
13. 13.Which of these helps everyone use the app? (a) colour as the only clue (b) fast-flashing lights (c) strong colour contrast (d) sudden loud sounds
14. 14.Which of these makes the app harder to use? (a) strong colour contrast (b) sudden loud sounds (c) big touch targets (d) captions on videos
15. 15.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 23 px
    Hint: 19 px
    Label: 26 px
    Caption: 12 px (a) Caption (b) Hint (c) Title (d) Label
16. 16.♿ Accessibility means an app works for ___. (a) only the coder (b) only experts (c) nobody (d) everyone
17. 17.True or false: “sudden loud sounds” makes the app harder to use. (a) False (b) True
18. 18.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 21 px
    Footer: 19 px
    Label: 21 px
19. 19.🔍 Which is the odd one out? (a) colour as the only clue (b) big touch targets (c) sudden loud sounds (d) tiny tap areas
20. 20.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
21. 21.♿ Showing right or wrong only in red and green is a problem for ___. (a) colour-blind users (b) the battery (c) fast typists (d) the server
22. 22.♿ A screen has 11 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
23. 23.Which of these helps everyone use the app? (a) fast-flashing lights (b) tiny tap areas (c) big touch targets (d) colour as the only clue
24. 24.♿ What does a screen reader do? (a) makes text tiny (b) takes photos (c) reads the screen aloud (d) plays music
25. 25.♿ A screen has 6 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
26. 26.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
27. 27.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a text label (c) a bright colour (d) a sound
28. 28.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 14 px
    Menu: 18 px
    Footer: 20 px (a) Hint (b) Footer (c) Menu
29. 29.🔍 Which is the odd one out? (a) labels on every icon (b) text that can grow (c) big touch targets (d) icons with no labels
30. 30.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 19 px
    Label: 21 px
    Title: 21 px
31. 31.True or false: “colour as the only clue” helps everyone use the app. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) icons with no labels (b) fast-flashing lights (c) colour as the only clue (d) text that can grow
33. 33.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
34. 34.True or false: “captions on videos” helps everyone use the app. (a) False (b) True
35. 35.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 22 px
    Menu: 21 px
    Caption: 16 px
    Body text: 9 px (a) Menu (b) Body text (c) Title (d) Caption
36. 36.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 25 px
    Label: 10 px
    Footer: 16 px (a) Body text (b) Label (c) Footer
37. 37.Which of these helps everyone use the app? (a) fast-flashing lights (b) tiny tap areas (c) text that can grow (d) icons with no labels
38. 38.Which of these makes the app harder to use? (a) icons with no labels (b) text that can grow (c) labels on every icon (d) strong colour contrast
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 19 px
    Caption: 26 px
    Menu: 12 px
    Label: 19 px (a) Hint (b) Menu (c) Label (d) Caption
40. 40.🔍 Which is the odd one out? (a) captions on videos (b) strong colour contrast (c) colour as the only clue (d) labels on every icon

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