Why not use your iPads to do a little bit of practise to reach them? Here are some useful websites...
http://worldbookday.com/wbdtv/ - trailers for new and upcoming books, and storytime videos!
http://www.oxfordowl.co.uk/reading-owl/reading - loads of free books for your iPad!
http://www.bbc.co.uk/bitesize/ks2/english/spelling_grammar/ - grammar practice!
http://www.bbc.co.uk/bitesize/ks2/english/writing/ - useful writing tips.
http://www.mathletics.co.uk/ - we all know this one really well :)
https://www.khanacademy.org/ - this explains how to work out lots of calculations with videos and practice questions!