App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 435 · 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.🔍 Which is the odd one out? (a) colour as the only clue (b) tiny tap areas (c) strong colour contrast (d) fast-flashing lights
2. 2.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) fast typists (c) colour-blind users (d) the server
3. 3.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Menu: 16 px
   Title: 20 px
   Caption: 10 px
   Label: 10 px
   Footer: 12 px
4. 4.True or false: “text that can grow” makes the app harder to use. (a) False (b) True
5. 5.Which of these makes the app harder to use? (a) labels on every icon (b) sudden loud sounds (c) text that can grow (d) strong colour contrast
6. 6.🔍 Which is the odd one out? (a) tiny tap areas (b) text that can grow (c) fast-flashing lights (d) icons with no labels
7. 7.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
8. 8.♿ Why add captions to videos? (a) to add colour (b) to hide the sound (c) so anyone can follow (d) to slow them down
9. 9.♿ What should every icon-only button have for screen readers? (a) a bright colour (b) a long animation (c) a sound (d) a text label
10. 10.Which of these helps everyone use the app? (a) sudden loud sounds (b) icons with no labels (c) labels on every icon (d) fast-flashing lights
11. 11.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 15 px
    Title: 23 px
    Label: 12 px
    Hint: 21 px
12. 12.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 12 px
    Body text: 17 px
    Title: 14 px
13. 13.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
14. 14.🔍 Which is the odd one out? (a) captions on videos (b) fast-flashing lights (c) big touch targets (d) text that can grow
15. 15.♿ What does a screen reader do? (a) takes photos (b) makes text tiny (c) reads the screen aloud (d) plays music
16. 16.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 16 px
    Footer: 21 px
    Title: 17 px
    Menu: 10 px
    Hint: 25 px (a) Menu (b) Title (c) Footer (d) Label
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?
    Caption: 13 px
    Title: 16 px
    Hint: 17 px
    Menu: 18 px
19. 19.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 19 px
    Hint: 12 px
    Body text: 19 px (a) Hint (b) Footer (c) Body text
20. 20.Which of these helps everyone use the app? (a) tiny tap areas (b) fast-flashing lights (c) text that can grow (d) icons with no labels
21. 21.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
22. 22.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 12 px
    Body text: 22 px
    Caption: 26 px (a) Caption (b) Body text (c) Title
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 25 px
    Label: 13 px
    Caption: 24 px
    Footer: 19 px (a) Caption (b) Menu (c) Footer (d) Label
24. 24.♿ Accessibility means an app works for ___. (a) only the coder (b) everyone (c) only experts (d) nobody
25. 25.Which of these makes the app harder to use? (a) big touch targets (b) text that can grow (c) tiny tap areas (d) labels on every icon
26. 26.True or false: “sudden loud sounds” helps everyone use the app. (a) False (b) True
27. 27.True or false: “tiny tap areas” makes the app harder to use. (a) True (b) False
28. 28.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 26 px
    Caption: 12 px
    Body text: 23 px (a) Body text (b) Footer (c) Caption
29. 29.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
30. 30.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 14 px
    Title: 25 px
    Label: 27 px
    Hint: 20 px
    Body text: 28 px (a) Label (b) Menu (c) Title (d) Hint
31. 31.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 24 px
    Footer: 17 px
    Title: 15 px
    Menu: 20 px
    Body text: 14 px
32. 32.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 18 px
    Body text: 23 px
    Hint: 9 px (a) Body text (b) Label (c) Hint
33. 33.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 21 px
    Menu: 16 px
    Label: 9 px (a) Label (b) Caption (c) Menu
34. 34.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
35. 35.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 20 px
    Footer: 19 px
    Label: 14 px (a) Footer (b) Hint (c) Label
36. 36.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
37. 37.🔍 Which is the odd one out? (a) text that can grow (b) colour as the only clue (c) captions on videos (d) labels on every icon
38. 38.♿ A screen has 12 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
39. 39.🔍 Which is the odd one out? (a) tiny tap areas (b) icons with no labels (c) fast-flashing lights (d) captions on videos
40. 40.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True

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