What three brainstorming methods can you follow if you are having trouble choosing a topic for your speech? 2. What are the two general purposes of most classroom speeches? How do they differ? 3. Why is determining the specific purpose such an important early step in speech preparation? Why is it important to include the audience in the specific purpose statement? 4. What are five tips for formulating your specific purpose? 5. What are five questions to ask about your specific purpose? 6. What is the difference between the specific purpose and the central idea of a speech? What are four guidelines for an effective central idea?