Hi proudmama72
I'm from the US where school doesn't start until the year you turn 7 and often children start at age 6 with few reading skills. So my feeling is ages 7 - 9 is when reading skills really take off.
First off at age 7 I would still be reading with my child. If your DC doesn't like reading, but can do it - play to that:
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In terms of reading each night - I'd say at this age you should have your DC read to you and should still be reading to your DC (in fact my DD1 Y6/ DD2 Y4 still have me read to them - but reduced to 1 night a week, and I'm reading a chapter each weekend from the Lemony Snicket series - sometimes two when it's really exciting).
With DD1 (who had problems saying 'r' so didn't like reading out loud & struggled to learn to read) we started off with reading a few words out of a sentence, and then I'd read the rest of the paragraph.
Then we had her read a whole sentence and I'd read the rest of the paragraph & maybe the next one.
Then we had her read a whole paragraph and I'd read the rest of the page.
Then she read one page and I read one page.
About then, she either preferred to totally read to me or if she was tired for me to read to her - so we just took turns. Quite often she starts, but gets sleepy and asks me to finish the chapter.
Getting into the habit of finishing the chapter when reading (so you know what happens and are set up for the next night) gets them use to reading more than just a page or two.
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'Chapter Books' can be quite an issue in class and certainly DD2 was mercilessly teased in Y1 about not reading chapter books yet. Unfortunately she was then given a chapter book for guided reading that was much harder than anything she'd ever had and so she felt a total failure, was moved down a table the next week (again feeling a total failure) and was completely dejected about reading. Took me months to give her the confidence to do it.
So my advice is go to a book store/ library/ etc... and look at books with your DC - there are easier chapter books out there (Early Readers Series: www.amazon.co.uk/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&field-keywords=Early+Readers for example) which your DC can start off slowly with.
Richard and Judy bookclub (through WH Smith) had a range of new books that were a lot of fun to read - some of their selections are still archived: www.richardandjudy.co.uk/childrens-current-reads/Autumn-2012/229 - DD2 particularly liked Roodica the Rude www.amazon.co.uk/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&field-keywords=roodica%20the%20rude&sprefix=roodic%2Cstripbooks&rh=i%3Astripbooks%2Ck%3Aroodica%20the%20rude - nice mix of Roman Britain (which she adores) and chapter book but with pictures!
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Finally - have a think about whether your DC is still struggling to blend sounds. If reading is still an effort (80% of words are difficult/ maybe even 50% of words are difficult) - you may need to still be supporting basic 'decoding' skills (so what the letters stand for). Over-exaggerating how you sound out words and discussing what tricky words mean are still things that you may need to be doing to support your DC's reading.
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My girls are 9 and 11 and to be honest proudmama72 I'm still reading with them and they're still regularly reading to me. It's moved on now to discussing vocabulary and use of language whilst we read, but they still need my input. In general DH and I have found it easiest to support reading by just making it part of the routine with our DDs - so whilst one is bathing he or I read with the other.
HTH