Don't know what your purpose is? Here's an easy way to find out — and it involves asking your friends! Get special access to live conversations and events like this when you become a TED Member: http://t.ted.com/QDjsMMd | TED

Are you an educator looking for ways to engage your students and bring new experiences and activities into the classroom? The TED-Ed Student Talks program provides free, customizable activities for educators to support students’ public speaking skills. Learn more here: http://t.ted.com/KP0a952 | TED-Ed