Google Jamboard

Google jamboard:

https://jamboard.google.com/d/1_7rHaestWa0a0K0TAZLjncuWoGso87IiqyEvvLme3es/viewer

免費虛擬白板 Google Jamboard：讓課堂互動起來 (HD)

https://www.youtube.com/watch?v=nB_CNbvh568