App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 260 · 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.True or false: “colour as the only clue” helps everyone use the app. (a) True (b) False
2. 2.True or false: “captions on videos” makes the app harder to use. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) labels on every icon (b) sudden loud sounds (c) captions on videos (d) strong colour contrast
4. 4.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
5. 5.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
6. 6.♿ Accessibility means an app works for ___. (a) only the coder (b) only experts (c) nobody (d) everyone
7. 7.♿ A screen has 8 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
8. 8.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Footer: 21 px
   Body text: 15 px
   Hint: 10 px
9. 9.♿ A screen has 8 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
10. 10.Which of these makes the app harder to use? (a) strong colour contrast (b) tiny tap areas (c) labels on every icon (d) captions on videos
11. 11.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) icons with no labels (b) big touch targets (c) captions on videos (d) labels on every icon
13. 13.Which of these helps everyone use the app? (a) tiny tap areas (b) colour as the only clue (c) sudden loud sounds (d) labels on every icon
14. 14.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 13 px
    Footer: 12 px
    Body text: 23 px
    Title: 14 px
    Caption: 16 px
15. 15.♿ Showing right or wrong only in red and green is a problem for ___. (a) the server (b) fast typists (c) colour-blind users (d) the battery
16. 16.♿ A screen has 6 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
17. 17.♿ A screen has 7 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
18. 18.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
19. 19.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 20 px
    Caption: 11 px
    Title: 12 px
    Menu: 14 px
20. 20.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
21. 21.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 21 px
    Hint: 9 px
    Label: 20 px (a) Label (b) Hint (c) Caption
22. 22.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 24 px
    Menu: 10 px
    Body text: 23 px
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 16 px
    Title: 28 px
    Footer: 23 px
    Caption: 21 px
    Menu: 13 px (a) Body text (b) Title (c) Footer (d) Menu
24. 24.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
25. 25.🔍 Which is the odd one out? (a) icons with no labels (b) big touch targets (c) fast-flashing lights (d) tiny tap areas
26. 26.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 18 px
    Caption: 10 px
    Body text: 20 px
    Hint: 27 px
    Label: 18 px (a) Caption (b) Hint (c) Title (d) Body text
27. 27.True or false: “captions on videos” helps everyone use the app. (a) True (b) False
28. 28.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 14 px
    Caption: 19 px
    Title: 24 px (a) Caption (b) Menu (c) Title
29. 29.♿ What should every icon-only button have for screen readers? (a) a bright colour (b) a sound (c) a text label (d) a long animation
30. 30.True or false: “big touch targets” helps everyone use the app. (a) True (b) False
31. 31.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
32. 32.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 21 px
    Title: 18 px
    Hint: 22 px
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 12 px
    Caption: 16 px
    Hint: 19 px
    Body text: 28 px
    Label: 16 px (a) Footer (b) Hint (c) Caption (d) Body text
35. 35.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 9 px
    Caption: 20 px
    Label: 19 px (a) Title (b) Caption (c) Label
36. 36.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
37. 37.Which of these makes the app harder to use? (a) sudden loud sounds (b) text that can grow (c) labels on every icon (d) big touch targets
38. 38.True or false: “tiny tap areas” helps everyone use the app. (a) True (b) False
39. 39.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 23 px
    Menu: 10 px
    Label: 17 px
    Footer: 21 px
40. 40.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 14 px
    Footer: 25 px
    Menu: 16 px
    Title: 16 px (a) Footer (b) Title (c) Menu (d) Caption

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