If you're interested in learning about sketchnoting for professional development as well as with students, be sure to explore this page from Kathy Schrock; there are many excellent resources and guides.
What makes “good notes”? What do they write down? How should notes look? This is a great article and guide for you to use to get your students mastering the skill of note-taking (using an analog system).
This article reviews some research on how students remember information. Learn about the benefits of drawing on the students' memory. The article also offers tips to incorporate drawing to enrich learning.
In this blog post from Sylvia Duckworth, she explains what sketchnoting is and provides links to other slideshows and educators that have interested or influenced her. She provides many examples of her own sketchnotes and describes the tools she uses.
In this 3-minute video, learn about the 5 C's of education in the future: communicate, critical thinking, collaborate, create, connect. Although this video is not directly about sketchnoting, it is a fascinating look at the process of sketchnoting ideas.
In this 5:50 minute video, Sunni Brown makes the case for unlocking your brain via pad and pen. Studies show that sketching and doodling improve our comprehension, information processing and creative thinking.
This blog post is a good introduction to sketchnoting (traditional with pen and paper). Although the content is not specific to education or a classroom, it's a relevant overview of the medium, lettering, tools and considerations.