This year the CBE created an Office 365 environment for all the teachers and students. Different applications started to be available during the year: OneDrive, Sway and OneNote amongst others. As a Surface user, I already knew and used OneNote for personal purposes and soon I started to play around with it and discovered a myriad of possibilities for my lessons. I started to use it and soon it became an essential in my class, especially since I do not have a textbook for Mathematics or Spanish. From all the technological tools that I have used in my career, this one has been the most transforming. These are the main 3 reasons why I love it: You can create a Class Notebook for each of your classes. In each class you have, by default, a "Teacher Only Section", a " Collaboration " section and a "Content" area ( shared with the students in that classroom), and a Notebook for every student. Each student Section has already these sections "Ha