App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 171 · 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.♿ Showing right or wrong only in red and green is a problem for ___. (a) fast typists (b) the server (c) colour-blind users (d) the battery
2. 2.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
3. 3.♿ A screen has 7 icon buttons. Only 2 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. Which text on this screen is too small?
   Caption: 25 px
   Footer: 21 px
   Title: 9 px
   Body text: 22 px (a) Body text (b) Caption (c) Footer (d) Title
5. 5.True or false: “colour as the only clue” makes the app harder to use. (a) False (b) True
6. 6.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) makes it harder (b) helps everyone
7. 7.🔍 Which is the odd one out? (a) icons with no labels (b) colour as the only clue (c) tiny tap areas (d) text that can grow
8. 8.True or false: “strong colour contrast” makes the app harder to use. (a) False (b) True
9. 9.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
   Caption: 17 px
   Title: 23 px
   Label: 19 px
   Menu: 15 px
   Hint: 22 px
10. 10.True or false: “strong colour contrast” helps everyone use the app. (a) True (b) False
11. 11.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
12. 12.Which of these helps everyone use the app? (a) colour as the only clue (b) icons with no labels (c) captions on videos (d) sudden loud sounds
13. 13.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Menu: 21 px
    Caption: 23 px
    Footer: 10 px
    Label: 22 px
    Hint: 18 px
14. 14.Which of these makes the app harder to use? (a) text that can grow (b) big touch targets (c) tiny tap areas (d) labels on every icon
15. 15.♿ A screen has 8 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
16. 16.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
17. 17.♿ What does a screen reader do? (a) plays music (b) makes text tiny (c) reads the screen aloud (d) takes photos
18. 18.🔍 Which is the odd one out? (a) big touch targets (b) labels on every icon (c) captions on videos (d) sudden loud sounds
19. 19.♿ A screen has 12 icon buttons. Only 6 of them have a text label for screen readers. How many still need a label?
20. 20.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) makes it harder (b) helps everyone
21. 21.♿ Does this help everyone, or make the app harder to use: fast-flashing lights? (a) helps everyone (b) makes it harder
22. 22.🔍 Which is the odd one out? (a) colour as the only clue (b) tiny tap areas (c) big touch targets (d) fast-flashing lights
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 14 px
    Body text: 19 px
    Caption: 25 px
    Title: 20 px (a) Body text (b) Title (c) Menu (d) Caption
24. 24.Which of these helps everyone use the app? (a) strong colour contrast (b) colour as the only clue (c) fast-flashing lights (d) sudden loud sounds
25. 25.🔍 Which is the odd one out? (a) colour as the only clue (b) captions on videos (c) big touch targets (d) text that can grow
26. 26.♿ Why add captions to videos? (a) so anyone can follow (b) to slow them down (c) to add colour (d) to hide the sound
27. 27.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 17 px
    Hint: 19 px
    Footer: 24 px
    Caption: 10 px
    Menu: 12 px
28. 28.♿ What should every icon-only button have for screen readers? (a) a text label (b) a sound (c) a long animation (d) a bright colour
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 21 px
    Menu: 26 px
    Caption: 22 px
    Body text: 11 px (a) Hint (b) Caption (c) Menu (d) Body text
30. 30.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Hint: 23 px
    Body text: 12 px
    Menu: 20 px
    Label: 24 px (a) Hint (b) Menu (c) Body text (d) Label
31. 31.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Label: 21 px
    Footer: 10 px
    Hint: 22 px
    Menu: 20 px (a) Hint (b) Menu (c) Label (d) Footer
32. 32.🔍 Which is the odd one out? (a) captions on videos (b) text that can grow (c) big touch targets (d) icons with no labels
33. 33.True or false: “icons with no labels” makes the app harder to use. (a) True (b) False
34. 34.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) makes it harder (b) helps everyone
35. 35.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) helps everyone (b) makes it harder
36. 36.♿ Accessibility means an app works for ___. (a) nobody (b) only the coder (c) everyone (d) only experts
37. 37.True or false: “icons with no labels” helps everyone use the app. (a) True (b) False
38. 38.True or false: “labels on every icon” makes the app harder to use. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) tiny tap areas (b) labels on every icon (c) text that can grow (d) big touch targets
40. 40.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 24 px
    Footer: 26 px
    Hint: 26 px
    Title: 9 px
    Body text: 25 px (a) Title (b) Caption (c) Footer (d) Hint

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