This spreadsheet is interactive in that you can manipulate the graphics and use it each year for your monthly calendars. It can be projected to any type of device or just a plain wall. There are PowerPoint Presentations embedded into the spreadsheet that is also interactive. This is a teacher and student-friendly sheet.Graphics are linked to the sites where they came from.. all other graphics are either Microsoft clip art or graphics made by the author.This will be personalized for you each y