The document discusses three types of classroom speaking activities:
1) Talk as interaction which focuses on social functions like conversations and uses skills like turn-taking and small talk.
2) Talk as transaction which focuses on exchanging information through questions, explanations and negotiations.
3) Talk as performance which transmits information to an audience through speeches and presentations and involves skills like sequencing, pronunciation and engaging the audience.
The document provides features, skills and implications for teaching each type of talk.