1) When showing them a grapheme for sounding out a word they are struggling on should I use the letter names rather than sounds? It seems a bit strange for igh to go i-guh-huh and then to say that /ie/. If so, should I do this right from pink band?
no you should show them the and explain that this is a way to write the sound "ie"
2) Unfortunately we have quite a strong accent that confuses my children when the word sounded out is slightly different in our accent. Any tips for handling this? In particular how do you deal with the schwa sound (which is something I'd never heard of before I started researching this! I'd just assumed it was our accent making words like 'about' sound funny)?
It's important when you read to "normalise" the words ... say them how you would normally. When you say the word look at the written form and it will help you to see how the sounds in your accent are represented in writing.
3) Should I read the book to my children before they read it to me or should they attempt it first? Should I read it after they have read it? Our DS1 is lime band at Y4 but reads with no expression at all and I'm hoping to avoid this problem for the next 3.
I wouldn't read the reading scheme book to your child. If expression is a problem repeat the section in an appropriate tone and ask if they can see the difference. Or when you are reading aloud say it in a boring way, then in an exciting way, then in a sad way, frightened way .... ask them which fits the words.
- How many times should I read the same book with them? Is once enough if they read it 95% and comprehend the text fully or does some repetition help.
I would say if a child is reading accurately with understanding there is little to be gained from repeated reading.