This was a cute idea for demonstrating substitution but I'm not sure if it's that useful in the ISN. I also came across the "blob" method for an insert on substitution method and used that with my lower level classes.
Cool summary foldable but the space got tight for showing work clearly. I like to have a lot of space.
Love the examples (go on right hand reflect pages)
My student teacher did a great introduction activity for mixture problems with Kix and CocoPuffs cereal. I'll have to post that when I use it. She had this foldable to show the table method for mixture problems. I've never been a fan of this because you have to remember how to set up the table and that can get confusing. I won't use this next year but someone might find it useful so I'm including it.
Really nice summary bit here - lots of time consuming cutting though, I'd suggest giving it to students the day before and they have to cut for homework. This would be left hand learning and then I'd include some algebraic examples for them to solve on the "right hand reflect" page.
Some good stuff here for systems of linear inequalities. I just was not in class for most of this and some things are blank and we've got an extra blank page. So this needs some reworking.