I frequently use a vocabulary foldable in my interactive science notebooks for every unit. I prefer to place this next to or across from a unit title page in the notebook. With this template students wrtie words on the outside of the flap, and under the flap they write a short definition. This page can serve as a study aide or as a quick reference. I have used it during the unit, so when we encounter a new or unfamiliar word which the class feels is important or are struggling with, we put it in the foldable.