App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 535 · 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?
   Footer: 23 px
   Body text: 17 px
   Hint: 26 px
   Label: 12 px (a) Body text (b) Hint (c) Label (d) Footer
2. 2.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) makes it harder (b) helps everyone
3. 3.🔍 Which is the odd one out? (a) strong colour contrast (b) big touch targets (c) text that can grow (d) tiny tap areas
4. 4.Which of these makes the app harder to use? (a) text that can grow (b) big touch targets (c) labels on every icon (d) tiny tap areas
5. 5.♿ Why add captions to videos? (a) to hide the sound (b) to slow them down (c) to add colour (d) so anyone can follow
6. 6.♿ What does a screen reader do? (a) takes photos (b) makes text tiny (c) reads the screen aloud (d) plays music
7. 7.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) helps everyone (b) makes it harder
8. 8.True or false: “colour as the only clue” makes the app harder to use. (a) False (b) True
9. 9.Which of these helps everyone use the app? (a) big touch targets (b) tiny tap areas (c) fast-flashing lights (d) icons with no labels
10. 10.🔍 Which is the odd one out? (a) fast-flashing lights (b) captions on videos (c) tiny tap areas (d) colour as the only clue
11. 11.Which of these makes the app harder to use? (a) sudden loud sounds (b) labels on every icon (c) big touch targets (d) text that can grow
12. 12.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 13 px
    Caption: 20 px
    Footer: 21 px (a) Caption (b) Footer (c) Body text
13. 13.Which of these makes the app harder to use? (a) big touch targets (b) labels on every icon (c) text that can grow (d) colour as the only clue
14. 14.True or false: “fast-flashing lights” helps everyone use the app. (a) True (b) False
15. 15.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 18 px
    Title: 13 px
    Hint: 14 px
    Body text: 20 px
16. 16.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 26 px
    Caption: 11 px
    Title: 21 px (a) Title (b) Caption (c) Label
17. 17.Which of these makes the app harder to use? (a) big touch targets (b) captions on videos (c) text that can grow (d) fast-flashing lights
18. 18.Which of these makes the app harder to use? (a) strong colour contrast (b) captions on videos (c) labels on every icon (d) icons with no labels
19. 19.True or false: “icons with no labels” helps everyone use the app. (a) False (b) True
20. 20.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
21. 21.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
22. 22.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 17 px
    Footer: 17 px
    Hint: 15 px
23. 23.Which of these helps everyone use the app? (a) icons with no labels (b) tiny tap areas (c) labels on every icon (d) colour as the only clue
24. 24.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 22 px
    Title: 25 px
    Label: 11 px (a) Title (b) Body text (c) Label
25. 25.♿ A screen has 5 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
26. 26.🔍 Which is the odd one out? (a) icons with no labels (b) fast-flashing lights (c) colour as the only clue (d) text that can grow
27. 27.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
28. 28.♿ 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
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 9 px
    Menu: 25 px
    Label: 17 px (a) Hint (b) Menu (c) Label
30. 30.♿ Accessibility means an app works for ___. (a) nobody (b) everyone (c) only experts (d) only the coder
31. 31.True or false: “tiny tap areas” helps everyone use the app. (a) True (b) False
32. 32.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 25 px
    Title: 18 px
    Hint: 17 px
    Label: 12 px (a) Title (b) Label (c) Hint (d) Body text
33. 33.♿ A screen has 6 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 14 px
    Title: 21 px
    Hint: 27 px (a) Title (b) Hint (c) Label
35. 35.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) makes it harder (b) helps everyone
36. 36.Which of these helps everyone use the app? (a) icons with no labels (b) text that can grow (c) sudden loud sounds (d) colour as the only clue
37. 37.True or false: “text that can grow” makes the app harder to use. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) strong colour contrast (b) text that can grow (c) icons with no labels (d) labels on every icon
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 17 px
    Hint: 9 px
    Label: 25 px (a) Hint (b) Label (c) Footer
40. 40.True or false: “labels on every icon” helps everyone use the app. (a) True (b) False

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