App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 595 · 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: “text that can grow” makes the app harder to use. (a) True (b) False
2. 2.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) makes it harder (b) helps everyone
3. 3.🔍 Which is the odd one out? (a) fast-flashing lights (b) tiny tap areas (c) icons with no labels (d) labels on every icon
4. 4.♿ What does a screen reader do? (a) plays music (b) takes photos (c) reads the screen aloud (d) makes text tiny
5. 5.True or false: “labels on every icon” helps everyone use the app. (a) True (b) False
6. 6.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Footer: 24 px
   Caption: 17 px
   Title: 21 px
   Label: 20 px
7. 7.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Caption: 11 px
   Menu: 17 px
   Title: 10 px
8. 8.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Caption: 9 px
   Menu: 21 px
   Hint: 26 px
   Footer: 26 px
   Label: 16 px (a) Menu (b) Footer (c) Hint (d) Caption
9. 9.Which of these helps everyone use the app? (a) strong colour contrast (b) fast-flashing lights (c) sudden loud sounds (d) tiny tap areas
10. 10.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 13 px
    Body text: 10 px
    Hint: 12 px
    Title: 11 px
    Caption: 19 px
11. 11.♿ 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
12. 12.True or false: “strong colour contrast” helps everyone use the app. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) text that can grow (b) tiny tap areas (c) labels on every icon (d) strong colour contrast
14. 14.🔍 Which is the odd one out? (a) icons with no labels (b) tiny tap areas (c) sudden loud sounds (d) captions on videos
15. 15.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 16 px
    Title: 16 px
    Menu: 19 px
16. 16.True or false: “colour as the only clue” helps everyone use the app. (a) False (b) True
17. 17.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 13 px
    Label: 23 px
    Hint: 16 px
    Title: 26 px
    Caption: 23 px (a) Hint (b) Label (c) Body text (d) Title
18. 18.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 20 px
    Caption: 10 px
    Footer: 21 px
    Hint: 12 px
19. 19.True or false: “fast-flashing lights” makes the app harder to use. (a) False (b) True
20. 20.♿ What should every icon-only button have for screen readers? (a) a sound (b) a text label (c) a bright colour (d) a long animation
21. 21.♿ A screen has 12 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
22. 22.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
23. 23.Which of these helps everyone use the app? (a) sudden loud sounds (b) tiny tap areas (c) text that can grow (d) colour as the only clue
24. 24.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 23 px
    Footer: 12 px
    Hint: 16 px
    Label: 23 px
    Menu: 22 px
25. 25.🔍 Which is the odd one out? (a) tiny tap areas (b) fast-flashing lights (c) icons with no labels (d) strong colour contrast
26. 26.♿ Why add captions to videos? (a) so anyone can follow (b) to add colour (c) to hide the sound (d) to slow them down
27. 27.♿ A screen has 10 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
28. 28.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 19 px
    Footer: 15 px
    Label: 23 px
    Title: 23 px
29. 29.🔍 Which is the odd one out? (a) big touch targets (b) sudden loud sounds (c) labels on every icon (d) captions on videos
30. 30.True or false: “icons with no labels” helps everyone use the app. (a) True (b) False
31. 31.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 26 px
    Body text: 21 px
    Caption: 11 px
    Menu: 18 px (a) Body text (b) Caption (c) Menu (d) Hint
32. 32.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
33. 33.🔍 Which is the odd one out? (a) text that can grow (b) icons with no labels (c) tiny tap areas (d) fast-flashing lights
34. 34.Which of these helps everyone use the app? (a) sudden loud sounds (b) tiny tap areas (c) colour as the only clue (d) big touch targets
35. 35.Which of these makes the app harder to use? (a) big touch targets (b) labels on every icon (c) text that can grow (d) fast-flashing lights
36. 36.Which of these helps everyone use the app? (a) tiny tap areas (b) fast-flashing lights (c) captions on videos (d) sudden loud sounds
37. 37.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 24 px
    Title: 18 px
    Label: 20 px
    Hint: 23 px
    Body text: 15 px
38. 38.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 15 px
    Menu: 22 px
    Body text: 11 px
39. 39.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
40. 40.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False

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