The aim of the present work is to provide the results obtained in the suggested study about the design, application and evaluation of a technological-educational instrument capable of increasing awareness and environmental attitude in high school students. The method used was a pretest-posttest experimental design, for which a total sample of 294 students from Seville (Spain) were selected. Among the results drawn, there was a significant increase in awareness and environmental attitude. It was concluded that technological instruments that favour learning in Environmental Education must be designed
