Teaching and programming often have different goals, and thus need different tools. However, IPython (now known as “Jupyter“) provides a Web-based “notebook” that makes it easier to demonstrate and collaborate on code — something that’s good for instruction, and also for daily software development. In this talk, Jess Hamrick describes how and why she now uses Jupyter notebooks to teach programming (and Python programming in particular), and what she (and her students) have learned in the process.