• Today I am going to talk to you about...
• Today we’re going to talk about …
• As you can see on the poster, my topic today is … / today’s topic is …
• My presentation is in two parts.
• My presentation is divided into four main sections.
• Firstly, secondly, thirdly, finally …
• I’m going to … take a look at… [or] talk about… [or] examine … [or] demonstrate …
• I’d like to talk about / I’d like to present to you today is …
• This morning/afternoon I’ll tell you something about the background … [or] give you some facts and figures …