Pose a topic, have students ask questions which interest them then vote on their most popular questions, then answer them with Typecast.
Having students think up and ask questions is an area explored further in this interesting article:
In a traditional classroom, the teacher is the center of attention, the owner of knowledge and information. Teachers often ask questions of their students to gauge comprehension, but it’s a passive model that relies on students to absorb information they need to reproduce on tests.
What would happen if the roles were flipped and students asked the questions?
And I think about it a little more in this post.