Book talk or booktalk is an introduction of several books to children with some theme. Unlike reading a book aloud, it requires some preparation like a scenario. It is describing the main conflict or problem of the book in such a way that will make children excited about reading the book to find out what happens.
Book talks are commonly used by children's librarians, teachers, or reading coaches, to get a reader interested in a book or to recommend similar books. It is an excellent tool for reading motivation. (From Wikipedia, sv "Book Talk")