What does the speaker talk about? [originaltext] Now, before we start our firs

Now, before we start our first lab, I’d like to tell you a little bit about the workbook you will be using. It is a big book. What you should do is to choose the activities you want to do. Part of my job is to help you make your choices.
   Next, I’d like to say that in each lesson, there are usually two parts. The first is called "Experiments" and the second is Called "Activities".
   In the "Experiments" part, the book gives full instructions for all the experiments, including other steps you may take. Choose the steps you wish and there’s plenty of equipment in the lab.
   In the "Activities" part, you’ll find activities you can do in your own time. No instructions are given in this part, and you should do them your own way.
   If there are no questions, let’s turn to Lesson One now.