App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 850 · 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?
   Body text: 17 px
   Hint: 12 px
   Menu: 26 px (a) Menu (b) Hint (c) Body text
2. 2.♿ What should every icon-only button have for screen readers? (a) a sound (b) a bright colour (c) a text label (d) a long animation
3. 3.♿ A screen has 7 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
4. 4.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Hint: 16 px
   Body text: 19 px
   Caption: 15 px
   Title: 15 px
5. 5.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
6. 6.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Hint: 9 px
   Menu: 21 px
   Caption: 18 px (a) Caption (b) Hint (c) Menu
7. 7.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Body text: 11 px
   Caption: 16 px
   Label: 10 px
   Title: 16 px
   Footer: 24 px
8. 8.True or false: “strong colour contrast” helps everyone use the app. (a) False (b) True
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Title: 22 px
   Hint: 21 px
   Menu: 9 px (a) Menu (b) Hint (c) Title
10. 10.True or false: “sudden loud sounds” makes the app harder to use. (a) False (b) True
11. 11.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 20 px
    Caption: 20 px
    Title: 10 px
    Footer: 10 px
    Label: 11 px
12. 12.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
13. 13.♿ Why add captions to videos? (a) to hide the sound (b) to slow them down (c) to add colour (d) so anyone can follow
14. 14.♿ Accessibility means an app works for ___. (a) only experts (b) nobody (c) everyone (d) only the coder
15. 15.♿ A screen has 12 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
16. 16.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 24 px
    Caption: 9 px
    Body text: 23 px
    Hint: 27 px
    Menu: 23 px (a) Label (b) Body text (c) Hint (d) Caption
17. 17.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
18. 18.True or false: “text that can grow” helps everyone use the app. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) labels on every icon (b) colour as the only clue (c) tiny tap areas (d) sudden loud sounds
20. 20.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) icons with no labels (d) big touch targets
21. 21.True or false: “tiny tap areas” helps everyone use the app. (a) True (b) False
22. 22.True or false: “colour as the only clue” helps everyone use the app. (a) True (b) False
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 12 px
    Menu: 20 px
    Hint: 22 px (a) Hint (b) Menu (c) Body text
24. 24.🔍 Which is the odd one out? (a) tiny tap areas (b) captions on videos (c) labels on every icon (d) big touch targets
25. 25.♿ 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
26. 26.Which of these helps everyone use the app? (a) fast-flashing lights (b) tiny tap areas (c) icons with no labels (d) captions on videos
27. 27.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 18 px
    Hint: 19 px
    Body text: 18 px
28. 28.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 20 px
    Caption: 18 px
    Body text: 14 px (a) Body text (b) Caption (c) Menu
29. 29.True or false: “labels on every icon” makes the app harder to use. (a) False (b) True
30. 30.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 10 px
    Caption: 27 px
    Label: 22 px
    Footer: 26 px
    Title: 16 px (a) Caption (b) Label (c) Menu (d) Footer
31. 31.True or false: “captions on videos” makes the app harder to use. (a) False (b) True
32. 32.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) makes it harder (b) helps everyone
33. 33.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) makes it harder (b) helps everyone
34. 34.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 22 px
    Caption: 24 px
    Hint: 13 px
    Menu: 13 px
    Label: 15 px
35. 35.True or false: “captions on videos” helps everyone use the app. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) sudden loud sounds (b) captions on videos (c) fast-flashing lights (d) tiny tap areas
37. 37.Which of these makes the app harder to use? (a) labels on every icon (b) big touch targets (c) captions on videos (d) colour as the only clue
38. 38.♿ What does a screen reader do? (a) makes text tiny (b) reads the screen aloud (c) takes photos (d) plays music
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 20 px
    Label: 14 px
    Caption: 21 px
    Hint: 23 px (a) Caption (b) Footer (c) Label (d) Hint
40. 40.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 19 px
    Body text: 10 px
    Title: 19 px

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