Foldables are great study aids, even for high school. This foldable was designed to be printed front and back then folded to the center making a shutter fold. Students will fill in the additional information as the teacher goes over it. The first page is the back of the foldable. The 12 squares are inside. You can also have the students cut 4 small slits dividing the 3 functions on each of the shutters.