For an opposing viewpoint, you can read this post from an EdTech blog. This teacher would rather see students creating interactive journals on iPads than on "analog" paper notebooks. Maybe he has a point, but he didn't provide much support for it. Mostly, he seems to think journaling in paper notebooks isn't as good as digital simply because we are living in a digital world, not a paper-and-pencil world.
An eighth-grade U.S. History teacher explains how using interactive notebooks help his students interact in meaningful ways with the content by allowing them to choose response types (drawing, diagram, poem, comment, story, among others). In his opinion, this supports Howard Gardner's theory of multiple intelligences.
Wondering if interactive notebooks are just a fad? This teacher blog gives seven sound reasons why interactive notebooks are good for student learning. I think one of the best reasons is that they serve as a portfolio for your students' progress--for you, the student's parents, and the student herself. The blogger offers an interactive notebook guide for "free" download, but the link actually goes to Teachers Pay Teachers, where you can purchase it for $4.50.
This video demonstrates how to a make a simple, tabbed foldable that would be adaptable for many different topics. The teacher also shows how to add additional tabs, and discusses a few possible uses for the foldable. This would be a good video to watch if you're new to foldables and want to start with a very basic design.
At $19.99, this Teachers Pay Teachers resource is a little pricier than most, but for this price you get one thousand PNG templates for foldables (pyramids, pamphlets, arrows, tickets, shutters, petals, and many others). The reviews are all very positive. If interactive notebooks will be a big part of your curriculum, and you know you want your students to use foldables in their notebooks, this resource would probably be worth the price.
There are tons of videos on how to set up interactive notebooks, but what I like about this one is the specific examples of "foldables," such as accordions, flipbooks, and even pop-ups. If you aren't naturally artistic or crafty, these examples will give you some ideas.
This 125-slide SlideShare presentation will give you a solid foundation for understanding exactly how students' interactive notebooks should be set up. Many examples and choices for student responses are given.