Notebook is a great way to provoke answers and memorization of what was read from students. I think it is put together well. Though some of the work assigned for the experiments has too much writing. My 12 year old hates the writing but the notebook sections help give him guidelines. Notebook goes exactly along with the book and points out all the important bits to remember. We do follow the schedule that the notebook provides. One less thing for the parents to do!
My kids, a boy, age 11 & a girl, age 12, are LOVING science this year, in part, because of these notebooks. The activities keep the kids engaged in the lessons, and help to reinforce what they're reading in the text.