App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 266 · 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) captions on videos (b) text that can grow (c) colour as the only clue (d) labels on every icon
2. 2.♿ Why add captions to videos? (a) to add colour (b) so anyone can follow (c) to hide the sound (d) to slow them down
3. 3.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
4. 4.♿ A screen has 8 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
5. 5.🔍 Which is the odd one out? (a) tiny tap areas (b) fast-flashing lights (c) big touch targets (d) sudden loud sounds
6. 6.Which of these helps everyone use the app? (a) fast-flashing lights (b) tiny tap areas (c) text that can grow (d) icons with no labels
7. 7.True or false: “colour as the only clue” helps everyone use the app. (a) True (b) False
8. 8.♿ What does a screen reader do? (a) plays music (b) makes text tiny (c) takes photos (d) reads the screen aloud
9. 9.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a text label (c) a bright colour (d) a sound
10. 10.🔍 Which is the odd one out? (a) icons with no labels (b) strong colour contrast (c) labels on every icon (d) text that can grow
11. 11.True or false: “big touch targets” makes the app harder to use. (a) False (b) True
12. 12.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 20 px
    Footer: 14 px
    Menu: 17 px
    Title: 26 px
    Caption: 21 px (a) Title (b) Body text (c) Footer (d) Menu
13. 13.True or false: “sudden loud sounds” helps everyone use the app. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) text that can grow (b) tiny tap areas (c) strong colour contrast (d) big touch targets
15. 15.🔍 Which is the odd one out? (a) text that can grow (b) fast-flashing lights (c) colour as the only clue (d) sudden loud sounds
16. 16.True or false: “fast-flashing lights” helps everyone use the app. (a) False (b) True
17. 17.Which of these helps everyone use the app? (a) colour as the only clue (b) fast-flashing lights (c) tiny tap areas (d) strong colour contrast
18. 18.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 19 px
    Body text: 19 px
    Label: 10 px
    Caption: 23 px (a) Caption (b) Label (c) Body text (d) Menu
19. 19.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
20. 20.True or false: “strong colour contrast” makes the app harder to use. (a) True (b) False
21. 21.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 23 px
    Hint: 17 px
    Label: 12 px
22. 22.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 16 px
    Title: 11 px
    Caption: 21 px (a) Label (b) Title (c) Caption
23. 23.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
24. 24.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 15 px
    Menu: 11 px
    Caption: 17 px
    Body text: 22 px
25. 25.True or false: “text that can grow” helps everyone use the app. (a) False (b) True
26. 26.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 19 px
    Caption: 11 px
    Footer: 17 px
    Menu: 18 px
27. 27.Which of these makes the app harder to use? (a) strong colour contrast (b) big touch targets (c) text that can grow (d) icons with no labels
28. 28.🔍 Which is the odd one out? (a) strong colour contrast (b) fast-flashing lights (c) captions on videos (d) labels on every icon
29. 29.True or false: “sudden loud sounds” makes the app harder to use. (a) False (b) True
30. 30.Which of these makes the app harder to use? (a) text that can grow (b) captions on videos (c) big touch targets (d) sudden loud sounds
31. 31.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
32. 32.♿ A screen has 7 icon buttons. Only 1 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. How many texts on this screen are too small?
    Hint: 17 px
    Title: 13 px
    Footer: 16 px
34. 34.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 21 px
    Menu: 13 px
    Label: 18 px
    Body text: 16 px
35. 35.♿ A screen has 7 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
36. 36.♿ Showing right or wrong only in red and green is a problem for ___. (a) colour-blind users (b) the battery (c) fast typists (d) the server
37. 37.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 16 px
    Hint: 26 px
    Menu: 19 px
    Label: 14 px (a) Label (b) Menu (c) Hint (d) Title
38. 38.♿ Accessibility means an app works for ___. (a) everyone (b) only experts (c) only the coder (d) nobody
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 27 px
    Footer: 9 px
    Body text: 20 px (a) Body text (b) Label (c) Footer
40. 40.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 10 px
    Title: 13 px
    Hint: 18 px

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