Frank is just saying there are options to use the phone as a computer with the screen linked up to the TV.
Many TVs today support "casting from the phone but there are plug in dongles which give the same ability to" dumb" tv's for about £5.
He mentions office programs which are specifically designed for phones to allow kids to do their documents. Facebook (naturally they will have an account), to send the work in.
Because every phone that supports WiFi, today, supports Bluetooth, you can also get full size Bluetooth keyboards which have track pads, also for about five to ten pounds. Allowing the kids to work as if they were on a desktop computer.
It isn't fast, but, for about £10-£15, you can use your TV and phone for school work.
The challenge is data, if you don't have WiFi at home or if your home WiFi is limited.
Mick had a great idea and the BT offer for schoolkids makes it all viable.
For me, having a chuwi larkbox, or equivalent, would do the same but in a far more powerful way.
https://www.amazon.com/CHUWI-LarkBox-Sm ... B089QGYGP2More powerful than the laptops they are pushing out, cheaper in volume and can tether the phone from the charging cable.
I know how good they are, I have one.