This work was carried out with the objective of promoting the development of scientific competences such as the Management of Scientific Language, the Explanation of Phenomena and the Inquiry, through two didactic units in the area of Natural Sciences, established for grades 4th of elementary school, and 9th of high school, at the E.I. Marco Fidel Suarez of Medellin. These didactic units included some digital educational resources such as blogs, videos, interactive games and virtual laboratories. This work allowed students to become more motivated in the face of the educational process and cultivate astonishing attitudes in their learning. In addition, it gave them the possibility to increase their abilities and desires to investigate, learn the interrelation between the planet, life and living creatures, develop a more restless and curious mentality of exploration and analysis of natural phenomena, and formulate alternatives that will help them to improve their present conditions of life and their environment