6. Work in groups. Play a speed game. Who is the fastest to: 1 name four things that run on batteries? 2 say four different things you can do with a phone app? 3 sing four different ringtones from your friends' and family mobiles?

This is a group activity, here are some possible answers:

1. Name four things that run on batteries:
* A remote control
* A flashlight
* A toy car
* A watch
2. Say four different things you can do with a phone app:
* Play games
* Edit photos
* Order food
* Send messages
3. Sing four different ringtones from your friends' and family mobiles:
This requires knowing the ringtones that your friends/family use.