Making a school video as a tool didactic teaching of atomic energy

This paper presents an educational experience related with natural radioactivity and the use of the mobile cell phone with the option to film video device, that is a problem for the students' attention in class. While the study of physics is based on laboratory work, not always experiences are fully assimilated by students. The groups usually distribute tasks so that each is considered as a unit in itself and this leads many students to lose complete vision of the activity performed. One way to get young people to achieve a better understanding of a given topic is to establish working set as the preparation of an explanatory video using their mobile phones. This approach leads to acquire a deep understanding of the phenomenon in question, as to produce the video should develop the script, the script and the sequence in which they should be presented different concepts. In this paper the particular case of the understanding and explanation of the phenomenon of natural radioactivity of potassium content in dietary salt used by people with high blood pressure to reduce sodium intake is shown. The theme shares many curricular areas of the natural sciences related with effects of radiation (physics), alteration of the chemical bonds in compounds (Chemistry) and production of effects on cells (Biology). While initially the educational problem was related to the students' attention, the results showed an unusual interest in the subject under the chosen methodology. Regarding the phenomenon of natural radioactivity debate on nuclear technological processes such as power generation, nuclear medicine and industrial applications of radiation, and the possible effects on life and the environment emerged. It should be considered that the production of this knowledge are a necessary part of the culture of citizens, since nuclear technology affects directly or indirectly impacting on their quality of life and this enables the participation of people in policy-making processes technology and still in control of these activities. (author)