4.2 the teacher, students read about the mechanical strength. In the textbook pages 19-21, and then brought together, debate, which should be concluded. As follows:
4.2 Teachers provide students with reading material on a mechanical. Pages 19-21 in your textbook and then discussed. This should be summarized as follows:
4.2 teachers ask students to read the content about the strength and mechanical function in textbooks 19-21 the debate together, which should be summarized as follows.