The following research is derived from the experience of university education in recent years in the Architecture’s History: this testifies to an experimental teaching effort, the classroom management strategies, the course of study and the relationships that develop between teacher and student through the analysis of the architectural treatises and technical literature, together with direct investigations in situ of the aspects about the execution of the work, the building materials and construction processes.
In this way, the students are taken to analyse the same theme in two separate and parallel paths, through an interdisciplinary approach between design, history and the continuing search for development of critical thinking  in student himself  :
1) The study of the architectural treatises; 2) The Roman Ars costruendi analysis; 3) The research works developed by the students as a group.
1. The Treaties on ancient architecture are individually examined and compared with each other by highlighting the similarities and differences; the aim is a new interpretation, through the creation of architectural models and processed original graphic patterns, aimed at the analysis of the building materials and construction techniques specific. This method of analysis will understand what happens when you draw freehand diagram for example of a planimetry: it is firstly noted on the monument the significant elements that characterize the work, so you have to synthesize what has been observed through drawing.
2. The architectural techniques and construction methods used in the Roman period are analyzed directly in the archaeological sites, where even reading and the design of the building stratification of different eras become a tool for student training. The exercise of drawing requires a work’s observation more focused and profound: through it they can understand the proportional relationships and to detect aspects that normal vision is not able to ensure.
3. Working as a group, students develop and mature the critical thinking skills, autonomy in the historical and scientific research, and so strengthen the relationships between them and the teacher.
Recent years’ experience seems to further confirm the clear benefit of this teaching tool for classroom management, also for the purpose of arousing latent vocations for possible disciplinary insights.
This paper, therefore, wants to be a testimony of the experience gained over the last few years of teaching the Architecture’s History in the Faculty of Architecture (Pescara- Italy).
This experience has developed over the past years teaching History of Architectural Techniques and is currently in the Degree Course of Building’s Techniques, single teaching of Architecture’s History.
It is believed to be important to stimulate student’s interest for the ancient buildings, thus achieving a sense of awareness and maturity that can be shared with other subjects and disciplines.
In addition to lessons, teaching is to encourage the opportunities for direct contact with architecture, through monographic communications, seminars, visits to historic sites, field exercises.
Through this methodological experience Architecture’s History study by theoretical becomes application.
The educational objectives are conditioned by the level of students’ prior knowledge and the purpose of their different curricula.
They are considered to be essential objectives:
1. Knowledge of Architecture’s History, compared not only to built works, but also to the many relationships that have allowed the diffusion of various architectural styles in different geographical and cultural contexts.
2. Another key goal, though, is the historical knowledge of the evolution of the methods and their components (Figure 1).
Among the conceptual objectives of a general nature, you want to get the student to understand the close relationship in every period of history between the architecture and the methods of construction; this awareness increases the student’s critical thinking skills, his analytical thinking and deductive about the construction process and operation of the studied buildings.
The student is then guided to an analysis, we can say synchronic and diachronic, of some basic elements of architecture through its historical formation.
From the synchronic point of view, student must understand the different solutions developed in each geographical area, designed in the same historical period, analyzing the possible similarities and differences.
From the diachronic point of view, however, student must understand the consistent aspects in the historical evolution that has taken place in the same place.
The teaching of the theory, it can be more successful when the teacher and the student work closely, as this facilitates the study and learning, because there is a direct experiences’ communication.
The theoretical exposure helps the understanding of the students, stimulating their interest in the topic.
In the next step, in reference to the application of what was learned by the student in the theoretical stage, we will seek to consolidate the knowledge acquired through some practical experience.
Figure 1. Column bases study.
In this meeting “Which history for what story?” exposes a didactic example, developed a few years ago, which is the analysis of the architectural treatises and technical literature, conducted along with direct surveys of the works in situ, during which they are also covered aspects related to the execution of the work, the building materials and construction processes.
In order that the goal is really achieved, it is necessary that the student acquires a personal capacity to understand the architecture (Figure 2).
The Treaties on ancient architecture are examined individually and then also compared with each other, highlighting similarities and differences; the purpose is a personal interpretation by the student of these texts, through the creation of original graphic models, with particular attention to the analysis of its constructive components and their graphic representation, through the building materials and the technical constructive specifications.
Later, the architectural techniques and building types are analyzed directly on buildings.
In the proposed specific example, these studies are carried out in the archaeological sites from the Roman era, in which even the reading of building’s stratification in different eras become a tool for student training.
In addition to knowledge of basic discipline’s terminology, the bibliographic research and along with major operations, this training course provides a critical interpretation, refers to the specific knowledge on periods, social conditions, spatial context conditions, and in particular on the works, languages and types.
Figure 2. Construction techniques table.
The course includes some exercises in groups, allowing the student to mature its work understanding, formulating also individual judgments with historical-critical foundation.
The study starts from reading of treaties’ text and it’s realized in a series of graphics, through which the theoretical aspect is interpreted in a personal way (Figure 3).
This graphic step is consulting other texts, from which are also borrowed the analytical mode.
The student, for example, compares it with the trainer with the reading of the architectural orders as are described in the treatise object of study.
Other aspects investigated are the methods of design described by the ancient authors, as well as the types relating to the buildings’ plans, through a synthesis and graphical interpretation process.
In addition to Vitruvius’ text  , we analyze the successive treaties  , regarding the studied issues, relating to mortars and various materials  already used in Roman times   .
You can, as well, check the differences between the text of the authors considered and among the Vitruvian text.
This interpretation is always confronted with the reality of the inspected works directly during the study trips that are a significant complement of academic pursuits.
The most interesting and conclusive phase of treatises’ theoretical study consists of a comparison between the various texts studied, conducted regarding specific topics, in order to have a systematic view of how these aspects are considered by the authors.
The next phase is the buildings’ direct analysis, through which the student is led to see what he had deduced from treatises’ theoretical study.
Figure 3. The Roman architecture sketch.
The direct view of the elements present in the visited sites, such as some significant parts of the architectural orders, allows a direct verification of these, through careful metric and morphological analysis  , which becomes the subject of drawings (Figure 4).
The survey is also extended to the type of buildings, for the understanding of which the survey operation becomes important, because it is an opportunity to establish a direct relationship with the architectural work.
For the student it becomes an opportunity to understand all aspects of the work, on the finishes, volumes, proportions, and experiencing building’s direct experience.
It then comes to the processing of the elements viewed, which can be also integrated with the comparison of the same with other elements deducted from bibliographic texts.
It follows the study of the construction techniques and materials, through the drawing of all the elements, deduced from treatises’ reading, together with the direct observation of the buildings.
They are studied the different types of arches, with a focus on implementation, but also to the materials used and the chromatic aspects.
They analyze other aspects such as flooring and columns’ conformation, with the comparison between different embodiments and geographical locations.
Finally, all the elements of construction are investigated, again through direct observation, verified through the descriptions of these aspects made in the Treaties.
The interest is focused not only on the architectural language, on the styles used and on the artistic aspects, but also on the technical facilities, infrastructure and all the necessary works to that time daily life.
Figure 4. Arches and vaulted surfaces.
To explain succinctly, it shows how this field of study is placed in an interdisciplinary context and also aims at achieving transferable experiences in other fields related to historical artifact.
In summary, the student must be able to recognize the architectural forms through their history and design, but also the structural systems that give rise to these stylistic forms, identifying the components and their parts.
Study the different types of construction means knowing how to identify and recognize their morphology, their functions and their behaviors.
This way of approaching the study Architecture’s History allows to know the techniques and their historical development in theoretical and practical way, along with the materials and their implementation in the construction process.
And thanks to this classroom management approach, the bond between teacher and student is amplified and becomes deeper because the work is always done in close contact between the two figures; it follows a development of student creative thinking as well as a problems’ high resolution1  capacity and an increasingly accurate classroom management methodology by the teacher view under the aspect of critical pedagogy  -  .
1As K. Popper argued, scientific research is to solve problems […], and then learn to solve problems is learning to live.