THE GUACHARACA AS A TRANSMITTER OF SOUND WAVES: A CROSS-SECTIONAL STUDY APPLIED IN PHYSICS (SOUND), CHEMISTRY (MATERIAL DIFFERENCES) AND SPANISH LANGUAGE (PHONETIC AND LYRICAL)

Abstract

The present study presents an analysis of the frequency of the sound waves emitted by the typical instrument of Colombian vallenato music called Guacharaca. For this purpose, the mathematical description of the variation of the frequency of the sound emitted by the guacharaca was carried out in relation to different variables associated with the physical structure of this musical instrument, such as: the separation of the grooves, the number of threads in the trinche, the diameter and the type of material of which the guacharaca is built.  as well as the study of the phonetics and lyrics of the songs where the instrument is presented in a solo. This analysis was carried out as part of a cross-sectional study of the courses of basic physics, chemistry and Spanish language; with a sample of thirty eleventh grade students from the I.E. CASD Simón Bolívar de Valledupar, Department of Cesar in Colombia. In order to validate the proposal, a didactic strategy based on the Active Learning Methodology was designed and applied, which allowed, through experimentation, to identify the relevant variables and their relationship with the frequency of the sound emitted by this instrument of Colombian folk music. The efficiency of the implemented didactic strategy was measured using Hake's normalized gain, through the comparison of the results of the diagnostic test with those of the exit test, which evidenced the progress and appropriation of the topics studied by the students.