Science

My recent hang up is science.  I have enjoyed using Rod & Staff's grades 3, 4, 5, and 6 textbooks.  I was disappointed that their new grade seven textbook seems so choppy.  It just doesn't flow.  I was planning to switch to CPO science for 13yo but it sounds like some of the supplies are spendy. 

Last night I cut and pasted (that sounds weird) the Core Knowledge K-4 science sequence into a document to use in planning for my 9yo.  Maybe this is what I need to do for my 13yo too?  We could use the Rod & Staff grade seven science textbook as a resource along with the Core Knowledge Sequence.  I feel a mish-mash science study coming on.