Recently I have been working on the 'mathematics introduction lesson'. I want to find more theories and articles about this kind of lesson. However, I can't even get useful information by searching on Google Scholar with words like 'Mathematics introduction lesson', 'chapter beginning lesson','pre-chapter lesson' and similar words.
I want to know how an English native speaker would describe this kind of lesson, in order to search some papers.(I am not a English native speaker. I think my failure may be due to the wrong search words.)
Here, 'mathematics introduction lesson' means this kind of lesson: in a mathematics lesson, before teaching a new chapter, the teacher tells students what they will learn, how to learn, the application of the knowledge in real life, or something more, all in one whole lesson. For example, in a mathematics introduction lesson before teaching the new chapter 'trigonometric function': I will tell my students the history of its being invented, how designers use the function to measure structures, its usage in industry, any difficulties during the learning process, and how to study this new chapter.
Sorry for choosing the tag 'word-choice', for I do not know which tag is proper. If it's not right, please edit it to a proper one if you like.