Brainstorming
Every idea in the room, on one board
Everyone writes idea cards on their phone, one idea per card. You close the cards, pin the strong ones, hide duplicates, split a card that holds two ideas, and group them. Then everyone gets a few dot votes. Brainstorms can also sit inside a question set, between trivia questions and slides.
Joining a brainstorm
Open your class on the Trivia page. When your teacher starts one, a Join button appears there, and the prompt shows on your phone automatically. Other students never see your name on a card.