Google Jamboard is a great tool that can be used as a digital whiteboard. Using your screen share feature in Big Blue Button, you can work with students in real-time, work within Google Drive, and collaborate with any device. For example, you want to work out a math problem to show the order of operations or you’re in a session to brainstorm ideas or complete an activity together.
This video shows how to use Jamboard for remote teaching and includes the Equati0! extension for math problems.