I look at our notebook as being a portfolio of my child's work in a subject for the year, so I include lots of different things:
....SOTW maps
....typewritten narrations I've taken of ds's summaries (sometimes one or two sentences, sometimes 6 or more, depends on him)
....handwritten narrations I've taken of ds's summaries
....his copywork of his own narrations
....pictures of projects we've done (building boats, mummifying GI Joe, Lego castles)
....coloring pages from SOTW AG or other resources
As for ds's narrations, sometimes I have to walk. him. through. every. step. in. at. a. painstaking. pace. Other times it just "clicks" for him. I'm looking through his history book from earlier this year... Here's what he said about Johannes Gutenberg:
Gutenberg was trained to be a goldsmith. He made a printing press out of a wine press. He had to figure out what type of metal to use for the letters. He also had to figure out what kind of ink to use. The first book Gutenberg printed was the Bible.
Most of the time, I end up saying a lot of, "What next?" or "Listen to this and tell me if this is good or if you want to add more." SWB's article on narration was very helpful to me (one of those things I need to pull out once and month and review for my own sanity as well as for the benefit of my children.)
I just purchased History Scribe for our US colonization studies; They look like nice pages, and I'm hoping it will challenge ds to want to do some more drawing, which is something he doesn't usually like to do.
We tend to do 1 notebook page for each of history and science per week. Sometimes we do two if there is somethings super important to write about. We use a separate timeline book to keep track of where we are in history.
If you go to my blog to the weekly reports, there are some pictures of work he's done that has been included in our notebooks.
HTH