The learning session entitled “We know how living beings related to the ecosystem” was developed in the area of science and technology. Taking into account the competence “Explaining the physical world based on knowledge about living beings, matter and energy, biodiversity, Earth and universe”. It was based on the necessary resource such as the ability to understand and use knowledge about living beings, matter and energy, biodiversity, Earth and universe, it has been possible to achieve in students the performance “Describing the interactions between living and non-living beings in their habitat. Example: The student points out that herbivores eat grass, that some animals feed on herbivores and that plants need the soil to live._x000D_ In the development of the learning session, motivating and challenging activities were applied which encourage children to describe and represe...