Teachers add questions to the presentation:

https://docs.google.com/presentation/d/1uEpUV1DpJHSrV0O8tv4MAyLuo8CYyFCpEiWMQVgTWGo/edit?usp=sharing

Students answer them on Twitter: #bethechangetakethechallenge

https://twitter.com/hashtag/bethechangetakethechallenge

Slow chat, Twitter moment:

Slow chat #TeachSDG #bethechangetakethechallenge