App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 115 · 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 of these makes the app harder to use? (a) captions on videos (b) text that can grow (c) colour as the only clue (d) big touch targets
2. 2.♿ What should every icon-only button have for screen readers? (a) a sound (b) a long animation (c) a bright colour (d) a text label
3. 3.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 22 px
   Body text: 19 px
   Title: 11 px
   Menu: 22 px
   Caption: 23 px (a) Footer (b) Body text (c) Menu (d) Title
4. 4.🔍 Which is the odd one out? (a) colour as the only clue (b) text that can grow (c) captions on videos (d) strong colour contrast
5. 5.🔍 Which is the odd one out? (a) colour as the only clue (b) icons with no labels (c) big touch targets (d) tiny tap areas
6. 6.Which of these helps everyone use the app? (a) sudden loud sounds (b) strong colour contrast (c) colour as the only clue (d) fast-flashing lights
7. 7.Which of these makes the app harder to use? (a) tiny tap areas (b) big touch targets (c) captions on videos (d) labels on every icon
8. 8.🔍 Which is the odd one out? (a) strong colour contrast (b) captions on videos (c) text that can grow (d) icons with no labels
9. 9.True or false: “fast-flashing lights” makes the app harder to use. (a) False (b) True
10. 10.♿ Does this help everyone, or make the app harder to use: text that can grow? (a) makes it harder (b) helps everyone
11. 11.♿ A screen has 5 icon buttons. Only 4 of them have a text label for screen readers. How many still need a label?
12. 12.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 16 px
    Menu: 18 px
    Caption: 10 px
13. 13.♿ A screen has 8 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
14. 14.♿ A screen has 6 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
15. 15.🔍 Which is the odd one out? (a) icons with no labels (b) colour as the only clue (c) strong colour contrast (d) tiny tap areas
16. 16.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 25 px
    Footer: 16 px
    Hint: 14 px (a) Footer (b) Hint (c) Menu
17. 17.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
18. 18.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 9 px
    Label: 24 px
    Title: 19 px (a) Title (b) Footer (c) Label
19. 19.♿ Accessibility means an app works for ___. (a) only experts (b) everyone (c) nobody (d) only the coder
20. 20.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 12 px
    Hint: 11 px
    Menu: 19 px
    Body text: 15 px
21. 21.True or false: “colour as the only clue” helps everyone use the app. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) tiny tap areas (b) icons with no labels (c) colour as the only clue (d) labels on every icon
23. 23.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 24 px
    Hint: 11 px
    Body text: 28 px
    Label: 23 px
    Caption: 26 px (a) Title (b) Hint (c) Label (d) Body text
24. 24.♿ Showing right or wrong only in red and green is a problem for ___. (a) fast typists (b) the server (c) the battery (d) colour-blind users
25. 25.♿ Why add captions to videos? (a) to add colour (b) so anyone can follow (c) to slow them down (d) to hide the sound
26. 26.♿ What does a screen reader do? (a) takes photos (b) makes text tiny (c) reads the screen aloud (d) plays music
27. 27.♿ Does this help everyone, or make the app harder to use: tiny tap areas? (a) helps everyone (b) makes it harder
28. 28.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) helps everyone (b) makes it harder
29. 29.🔍 Which is the odd one out? (a) fast-flashing lights (b) sudden loud sounds (c) colour as the only clue (d) captions on videos
30. 30.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Footer: 10 px
    Hint: 19 px
    Title: 25 px (a) Footer (b) Title (c) Hint
31. 31.True or false: “sudden loud sounds” makes the app harder to use. (a) False (b) True
32. 32.True or false: “labels on every icon” helps everyone use the app. (a) True (b) False
33. 33.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 23 px
    Label: 21 px
    Hint: 15 px
    Title: 14 px
34. 34.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 22 px
    Title: 12 px
    Menu: 16 px (a) Menu (b) Body text (c) Title
35. 35.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 13 px
    Label: 21 px
    Footer: 11 px
36. 36.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 20 px
    Footer: 16 px
    Menu: 11 px
37. 37.True or false: “big touch targets” makes the app harder to use. (a) True (b) False
38. 38.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Hint: 17 px
    Menu: 18 px
    Caption: 20 px
    Footer: 13 px
39. 39.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Menu: 28 px
    Footer: 27 px
    Hint: 19 px
    Caption: 10 px (a) Hint (b) Caption (c) Footer (d) Menu
40. 40.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Body text: 21 px
    Label: 15 px
    Caption: 24 px
    Title: 24 px
    Hint: 19 px

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