App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 441 · 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: “strong colour contrast” makes the app harder to use. (a) True (b) False
2. 2.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Caption: 26 px
   Title: 13 px
   Label: 21 px (a) Caption (b) Label (c) Title
3. 3.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Hint: 18 px
   Label: 10 px
   Body text: 17 px
4. 4.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
5. 5.🔍 Which is the odd one out? (a) icons with no labels (b) big touch targets (c) colour as the only clue (d) sudden loud sounds
6. 6.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 16 px
   Caption: 17 px
   Label: 22 px
   Body text: 12 px
   Hint: 20 px (a) Title (b) Caption (c) Body text (d) Label
7. 7.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 28 px
   Label: 16 px
   Body text: 9 px
   Title: 26 px
   Menu: 16 px (a) Body text (b) Title (c) Footer (d) Label
8. 8.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Body text: 27 px
   Footer: 25 px
   Label: 22 px
   Title: 11 px
   Hint: 17 px (a) Body text (b) Title (c) Label (d) Footer
10. 10.♿ A screen has 10 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
11. 11.♿ A screen has 10 icon buttons. Only 9 of them have a text label for screen readers. How many still need a label?
12. 12.♿ A screen has 7 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
13. 13.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
14. 14.🔍 Which is the odd one out? (a) captions on videos (b) fast-flashing lights (c) strong colour contrast (d) labels on every icon
15. 15.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 12 px
    Footer: 16 px
    Caption: 27 px
    Menu: 26 px (a) Body text (b) Caption (c) Footer (d) Menu
16. 16.♿ A screen has 9 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
17. 17.True or false: “tiny tap areas” helps everyone use the app. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) tiny tap areas (b) labels on every icon (c) text that can grow (d) strong colour contrast
19. 19.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 23 px
    Caption: 19 px
    Body text: 14 px (a) Body text (b) Caption (c) Title
20. 20.🔍 Which is the odd one out? (a) tiny tap areas (b) strong colour contrast (c) colour as the only clue (d) sudden loud sounds
21. 21.Which of these makes the app harder to use? (a) captions on videos (b) text that can grow (c) big touch targets (d) tiny tap areas
22. 22.♿ Accessibility means an app works for ___. (a) only experts (b) nobody (c) everyone (d) only the coder
23. 23.🔍 Which is the odd one out? (a) labels on every icon (b) colour as the only clue (c) big touch targets (d) text that can grow
24. 24.True or false: “colour as the only clue” makes the app harder to use. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) tiny tap areas (b) text that can grow (c) sudden loud sounds (d) fast-flashing lights
26. 26.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) makes it harder (b) helps everyone
27. 27.🔍 Which is the odd one out? (a) labels on every icon (b) colour as the only clue (c) fast-flashing lights (d) tiny tap areas
28. 28.Which of these helps everyone use the app? (a) labels on every icon (b) tiny tap areas (c) icons with no labels (d) fast-flashing lights
29. 29.♿ What should every icon-only button have for screen readers? (a) a bright colour (b) a text label (c) a long animation (d) a sound
30. 30.♿ A screen has 9 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
31. 31.Which of these helps everyone use the app? (a) tiny tap areas (b) icons with no labels (c) colour as the only clue (d) big touch targets
32. 32.Which of these makes the app harder to use? (a) strong colour contrast (b) text that can grow (c) labels on every icon (d) colour as the only clue
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 18 px
    Footer: 21 px
    Label: 11 px
    Hint: 10 px
    Menu: 12 px
34. 34.♿ A screen has 12 icon buttons. Only 5 of them have a text label for screen readers. How many still need a label?
35. 35.True or false: “labels on every icon” helps everyone use the app. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) big touch targets (b) text that can grow (c) captions on videos (d) icons with no labels
37. 37.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
38. 38.True or false: “text that can grow” helps everyone use the app. (a) False (b) True
39. 39.♿ Why add captions to videos? (a) to slow them down (b) to add colour (c) to hide the sound (d) so anyone can follow
40. 40.♿ A screen has 11 icon buttons. Only 10 of them have a text label for screen readers. How many still need a label?

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