I have put together a list of websites that are fun activities the children can use to work on grammar and spelling. These websites can all be used on a tablet or a computer.
Newspaper report:
http://www.scootle.edu.au/ec/viewing/L935/index.html
Super Stories
http://www.scootle.edu.au/ec/viewing/L6187/index.html
Edit the comic book to make it more interesting
http://www.scootle.edu.au/ec/viewing/L1275/index.html#
Loads of grammar practice games
https://learnenglishkids.britishcouncil.org/en/grammar-practice