Slido has long been my choice for running interactive polls at live events. The customisation and reliability, along with great real-time results make it the best option I have used.
You can now run Slido polls directly inside Microsoft Teams.
This opens up new options for using Slido with classes - no codes needed, the polls just appear in Teams. Adding questions is easy also.
This is another example of the excellent services that are integrating in Teams to make the learning experience more centralised in one place.