It is expected that your child reads EVERDAY at home for at least 10 minutes. The more they read, the more they will be able to climb the Reading Tree and win prizes.
They can read to you, younger siblings or by themselves. Even though they are Year 5 please try to read with your children to ensure that they have understood what they have read. It is essential that they read daily because this will in turn develop their writing and conversational skills too.
Why not challenge them and read a book as well, then discuss both your books together.