This explains whiteboard.chat: https://smart.newrow.com/#/share/xT1dEFJKOzZawCseuli2SLNTJEwujMIWRFoCyseNKk7wbx0ymnWArGGVr7rHlZvRXazB8r9TWfPt06lKvnHlbDEFZX4LSqX8nKnQP0Cmb0oS~bXOObp-a3X9p~Qi-et3EQpimrZS986ToeJ-QR2OTZkuwx9hFRsXfbyglTzBKsr1hAQER47I7PN7P6nTJdMq3dc1HP2frPjaoM6KfbLJCA__?_k=w7rw84
This shows you how to use it for group work: https://youtu.be/TPwelns5CQA
Pear Deck is a Chrome Extension. It allows you to take any PPT or Google Slides and make it interactive providing you with data on how your students responded to questions. You can provide a link to a created Pear Deck for students to complete asynchronously, or application share PearDeck in a live session, and have the class go through slides and activities at the same pace. It is almost like Kahoot! on steroids, since you can add a lot of content, while having students respond to questions.
https://vimeo.com/414002967