IMHO, these books are not age appropriate in a CM education. Your child’s language lessons beginning at age 6 would be narration, copywork, and reading instruction. You don’t need a program for these, especially at this age. If you use these with a child younger than 6, you have left the realm of CM’s philosophy.
If you were to use them to ONLY teach phonics, you would waste 75% of the book. :-/
My .02
Now I do like them for OLDER children and use them for my 13, 12, and 10 yr olds, I however, bought new copies of Little Ones volumes 1 and 3 and will not be using them for my 5 and 7 year olds.