Abstract
STEM Education is an important topic in today’s educational paradigm. The knowledge in the STEM area will be important to everyone because to solve real-world problems it is necessary to have information from different areas of knowledge. In this perspective we present an educational resource that combines the contents of physics (colour addition with LEDs), engineering (circuit assembly), technology (Arduino platform and Processing, an open-source programming language and integrated development environment), and mathematics (number handling and unit conversion). Although there are many examples in the literature regarding the study of colour addition, the educational resource here presented brings a novelty for the students. With a very intuitive setup and a simulation, students are able to understand colour addition perceived by the human eyes from two different mechanisms simultaneously: the colour seen on a computer screen and the colour produced by an RGB LED. This STEM activity uses a very simple and affordable experimental setup (less than 30 dollars, excluding the computer) and it is a clear example of how technology enhanced learning in science can be incorporated in the classroom for teaching physics in a very engaging context.
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