The Raspberry Pi as a Computer Substitute at Elementary Schools in Developing Countries: A Pilot Experiment in EcuadorAlfredo Nuñez-Unda, Angelo Vera, Lidice Haz, Viviana Pinos, Roberto Zurita and Silvia MedinaMATEC Web Conf., 210 (2018) 04023DOI: https://doi.org/10.1051/matecconf/201821004023