So far I've had ds just read them to me 'unseen' beforehand and it's been fine but his latest book was a little trickier and I wondered if I should have read it to him first.
Looking at some ORT parent guide it suggested I should have but I'm not sure as then he'd probably just remember the words and not learn to decode/ read them himself.
He is just starting ORT 3 and the last book in 2 seemed harder for him, whereas until now they'd been slightly too easy if anything (based on the 95% concept people have mentioned on here).