Some relevant questions in science education from the perspective Science-Technology-Society

In this article, some of the answers given at this time to three classic questions related to science teaching: why teach science?, what kind of science to teach?, and how to teach it?, are analyzed from a Science-Technology-Society perspective (STS). It argues for the need to prepare future citizens to make responsible decisions on matters related to science and technology in the XXI century, and the convenience of using socio-scientific issues in the science classroom. Finally, the analysis is exemplified in two cases: food consumption and energy consumption.