App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 528 · 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.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Caption: 27 px
   Label: 18 px
   Title: 16 px
   Menu: 22 px
   Footer: 11 px (a) Title (b) Caption (c) Label (d) Footer
2. 2.♿ A screen has 9 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
3. 3.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 12 px
   Label: 17 px
   Footer: 20 px
   Caption: 26 px (a) Caption (b) Label (c) Title (d) Footer
4. 4.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Body text: 20 px
   Title: 21 px
   Hint: 19 px
   Label: 13 px (a) Label (b) Body text (c) Title (d) Hint
5. 5.♿ What does a screen reader do? (a) reads the screen aloud (b) plays music (c) takes photos (d) makes text tiny
6. 6.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
7. 7.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
8. 8.🔍 Which is the odd one out? (a) captions on videos (b) sudden loud sounds (c) tiny tap areas (d) colour as the only clue
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Menu: 18 px
   Caption: 17 px
   Title: 10 px
   Label: 20 px (a) Menu (b) Title (c) Label (d) Caption
10. 10.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 19 px
    Title: 27 px
    Footer: 10 px (a) Footer (b) Title (c) Menu
11. 11.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 16 px
    Footer: 10 px
    Label: 14 px
12. 12.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
13. 13.Which of these helps everyone use the app? (a) tiny tap areas (b) captions on videos (c) colour as the only clue (d) sudden loud sounds
14. 14.True or false: “big touch targets” helps everyone use the app. (a) False (b) True
15. 15.True or false: “strong colour contrast” helps everyone use the app. (a) True (b) False
16. 16.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) makes it harder (b) helps everyone
17. 17.♿ What should every icon-only button have for screen readers? (a) a sound (b) a bright colour (c) a long animation (d) a text label
18. 18.🔍 Which is the odd one out? (a) big touch targets (b) icons with no labels (c) strong colour contrast (d) labels on every icon
19. 19.True or false: “labels on every icon” makes the app harder to use. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) tiny tap areas (b) sudden loud sounds (c) labels on every icon (d) colour as the only clue
21. 21.♿ Showing right or wrong only in red and green is a problem for ___. (a) colour-blind users (b) fast typists (c) the battery (d) the server
22. 22.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 19 px
    Label: 14 px
    Body text: 24 px
    Title: 12 px
23. 23.♿ A screen has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
24. 24.🔍 Which is the odd one out? (a) fast-flashing lights (b) colour as the only clue (c) icons with no labels (d) text that can grow
25. 25.Which of these makes the app harder to use? (a) labels on every icon (b) big touch targets (c) text that can grow (d) colour as the only clue
26. 26.Which of these helps everyone use the app? (a) tiny tap areas (b) fast-flashing lights (c) strong colour contrast (d) colour as the only clue
27. 27.🔍 Which is the odd one out? (a) big touch targets (b) text that can grow (c) colour as the only clue (d) labels on every icon
28. 28.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 28 px
    Menu: 13 px
    Title: 20 px (a) Label (b) Menu (c) Title
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 20 px
    Menu: 19 px
    Label: 13 px
    Footer: 21 px (a) Label (b) Menu (c) Title (d) Footer
30. 30.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
31. 31.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 24 px
    Body text: 19 px
    Hint: 14 px (a) Title (b) Body text (c) Hint
32. 32.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 20 px
    Menu: 24 px
    Caption: 13 px
    Footer: 15 px
    Label: 18 px
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 18 px
    Menu: 18 px
    Body text: 10 px
    Label: 22 px
    Footer: 23 px
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 12 px
    Body text: 17 px
    Title: 19 px
    Label: 17 px
    Menu: 20 px (a) Body text (b) Footer (c) Title (d) Label
35. 35.🔍 Which is the odd one out? (a) labels on every icon (b) big touch targets (c) text that can grow (d) tiny tap areas
36. 36.🔍 Which is the odd one out? (a) text that can grow (b) strong colour contrast (c) fast-flashing lights (d) big touch targets
37. 37.Which of these makes the app harder to use? (a) text that can grow (b) fast-flashing lights (c) labels on every icon (d) strong colour contrast
38. 38.♿ A screen has 9 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 22 px
    Hint: 16 px
    Menu: 24 px
    Footer: 10 px
    Body text: 20 px (a) Footer (b) Hint (c) Menu (d) Caption
40. 40.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 27 px
    Body text: 18 px
    Title: 10 px (a) Body text (b) Title (c) Caption

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