1. First, open the Schiavo whiteboard and click the File menu at the top of the document page.

2. Secondly, select and click Backup and Recovery in the pop-up menu.

3. Then click Backup Center in the pop-up menu to view the history in a new window. Schiavo whiteboard is an interactive teaching platform independently developed by Schiavo, which is specially designed for information-based teaching. The product takes the generative teaching concept as the core, and provides teachers with cloud courseware, subject tools, teaching resources and other functions.