App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 60 · 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.♿ 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
2. 2.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Menu: 25 px
   Footer: 24 px
   Caption: 14 px
   Body text: 18 px
   Title: 24 px (a) Menu (b) Footer (c) Body text (d) Caption
3. 3.🔍 Which is the odd one out? (a) icons with no labels (b) strong colour contrast (c) tiny tap areas (d) colour as the only clue
4. 4.♿ Why add captions to videos? (a) to add colour (b) so anyone can follow (c) to hide the sound (d) to slow them down
5. 5.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Label: 14 px
   Hint: 13 px
   Footer: 16 px
6. 6.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Menu: 19 px
   Footer: 22 px
   Body text: 17 px
   Hint: 17 px
7. 7.🔍 Which is the odd one out? (a) captions on videos (b) labels on every icon (c) strong colour contrast (d) icons with no labels
8. 8.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Caption: 12 px
   Title: 14 px
   Menu: 11 px
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Label: 26 px
   Title: 14 px
   Body text: 24 px
   Hint: 24 px
   Caption: 24 px (a) Label (b) Hint (c) Body text (d) Title
10. 10.🔍 Which is the odd one out? (a) strong colour contrast (b) labels on every icon (c) tiny tap areas (d) captions on videos
11. 11.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
12. 12.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
13. 13.♿ A screen has 6 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
14. 14.♿ A screen has 8 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
15. 15.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
16. 16.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 13 px
    Menu: 15 px
    Body text: 15 px
17. 17.♿ A screen has 8 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
18. 18.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
19. 19.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
20. 20.Which of these helps everyone use the app? (a) fast-flashing lights (b) tiny tap areas (c) strong colour contrast (d) sudden loud sounds
21. 21.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 12 px
    Menu: 16 px
    Title: 21 px
    Caption: 20 px
    Body text: 25 px (a) Title (b) Menu (c) Label (d) Caption
22. 22.Which of these makes the app harder to use? (a) fast-flashing lights (b) labels on every icon (c) text that can grow (d) strong colour contrast
23. 23.🔍 Which is the odd one out? (a) colour as the only clue (b) sudden loud sounds (c) tiny tap areas (d) labels on every icon
24. 24.Which of these helps everyone use the app? (a) colour as the only clue (b) fast-flashing lights (c) labels on every icon (d) tiny tap areas
25. 25.♿ A screen has 11 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
26. 26.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 10 px
    Title: 22 px
    Footer: 11 px
27. 27.🔍 Which is the odd one out? (a) big touch targets (b) colour as the only clue (c) captions on videos (d) labels on every icon
28. 28.♿ A screen has 10 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
29. 29.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) fast typists (c) the server (d) colour-blind users
30. 30.♿ Accessibility means an app works for ___. (a) only the coder (b) only experts (c) nobody (d) everyone
31. 31.🔍 Which is the odd one out? (a) colour as the only clue (b) text that can grow (c) icons with no labels (d) tiny tap areas
32. 32.♿ A screen has 6 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
33. 33.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 18 px
    Title: 19 px
    Label: 13 px
    Caption: 21 px (a) Title (b) Caption (c) Label (d) Footer
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 22 px
    Footer: 25 px
    Label: 18 px
    Body text: 13 px
    Hint: 17 px (a) Body text (b) Footer (c) Label (d) Menu
35. 35.♿ What does a screen reader do? (a) reads the screen aloud (b) takes photos (c) plays music (d) makes text tiny
36. 36.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
37. 37.🔍 Which is the odd one out? (a) tiny tap areas (b) big touch targets (c) sudden loud sounds (d) fast-flashing lights
38. 38.Which of these makes the app harder to use? (a) colour as the only clue (b) big touch targets (c) captions on videos (d) labels on every icon
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 9 px
    Label: 26 px
    Hint: 27 px (a) Title (b) Label (c) Hint
40. 40.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 13 px
    Title: 26 px
    Menu: 26 px
    Hint: 26 px (a) Hint (b) Caption (c) Title (d) Menu

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