App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 603 · 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” helps everyone use the app. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) strong colour contrast (b) labels on every icon (c) icons with no labels (d) big touch targets
3. 3.♿ What does a screen reader do? (a) makes text tiny (b) takes photos (c) reads the screen aloud (d) plays music
4. 4.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
5. 5.True or false: “big touch targets” helps everyone use the app. (a) True (b) False
6. 6.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Caption: 13 px
   Menu: 22 px
   Footer: 18 px
7. 7.True or false: “icons with no labels” helps everyone use the app. (a) False (b) True
8. 8.True or false: “colour as the only clue” makes the app harder to use. (a) True (b) False
9. 9.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
10. 10.♿ A screen has 11 icon buttons. Only 8 of them have a text label for screen readers. How many still need a label?
11. 11.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 10 px
    Title: 26 px
    Body text: 19 px
    Caption: 17 px (a) Body text (b) Menu (c) Caption (d) Title
12. 12.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 23 px
    Hint: 22 px
    Caption: 11 px
13. 13.♿ A screen has 11 icon buttons. Only 3 of them have a text label for screen readers. How many still need a label?
14. 14.Which of these makes the app harder to use? (a) big touch targets (b) strong colour contrast (c) labels on every icon (d) colour as the only clue
15. 15.Which of these helps everyone use the app? (a) sudden loud sounds (b) icons with no labels (c) colour as the only clue (d) captions on videos
16. 16.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 23 px
    Title: 24 px
    Menu: 11 px
    Body text: 25 px
    Hint: 28 px (a) Title (b) Footer (c) Menu (d) Body text
17. 17.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 25 px
    Menu: 25 px
    Caption: 11 px
    Body text: 22 px (a) Hint (b) Body text (c) Menu (d) Caption
18. 18.♿ Showing right or wrong only in red and green is a problem for ___. (a) the battery (b) the server (c) fast typists (d) colour-blind users
19. 19.🔍 Which is the odd one out? (a) labels on every icon (b) strong colour contrast (c) colour as the only clue (d) captions on videos
20. 20.🔍 Which is the odd one out? (a) tiny tap areas (b) fast-flashing lights (c) icons with no labels (d) labels on every icon
21. 21.♿ A screen has 8 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
22. 22.🔍 Which is the odd one out? (a) icons with no labels (b) fast-flashing lights (c) tiny tap areas (d) strong colour contrast
23. 23.🔍 Which is the odd one out? (a) strong colour contrast (b) sudden loud sounds (c) labels on every icon (d) captions on videos
24. 24.Which of these helps everyone use the app? (a) fast-flashing lights (b) tiny tap areas (c) big touch targets (d) icons with no labels
25. 25.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 23 px
    Hint: 10 px
    Menu: 20 px
26. 26.True or false: “icons with no labels” makes the app harder to use. (a) False (b) True
27. 27.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 19 px
    Caption: 23 px
    Body text: 23 px
    Label: 23 px
28. 28.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 9 px
    Footer: 20 px
    Menu: 25 px (a) Menu (b) Footer (c) Title
29. 29.True or false: “fast-flashing lights” makes the app harder to use. (a) True (b) False
30. 30.Which of these makes the app harder to use? (a) labels on every icon (b) text that can grow (c) strong colour contrast (d) sudden loud sounds
31. 31.♿ A screen has 9 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
32. 32.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) makes it harder (b) helps everyone
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 24 px
    Caption: 14 px
    Footer: 17 px
    Hint: 11 px
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 10 px
    Footer: 25 px
    Label: 16 px (a) Body text (b) Label (c) Footer
35. 35.♿ Does this help everyone, or make the app harder to use: big touch targets? (a) makes it harder (b) helps everyone
36. 36.♿ Accessibility means an app works for ___. (a) only the coder (b) everyone (c) nobody (d) only experts
37. 37.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 20 px
    Footer: 24 px
    Title: 16 px
38. 38.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) helps everyone (b) makes it harder
39. 39.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 21 px
    Title: 10 px
    Hint: 20 px
    Caption: 17 px
    Footer: 14 px
40. 40.♿ A screen has 12 icon buttons. Only 5 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