PhET. Percepciones y contribucion del uso de simulaciones en el   aprendizaje de los conceptos de energia para un curso de fisica general de la   ensenanza tecnica
  The physics learning is very important to techniques teaching and the engineers upbringing. However, there is evidence that science classes from elementary school through to university are generally failing to provide most students with an understanding of physics We have explored the use of a novel aspect of information technology: interactive simulations to learning of energys concepts. This way, students can construct their understanding through semi-guided exploration. Research has shown this process to be an effective and engaging way to learn. 
Jose Enrique Martinez-Perez
physics.ed-ph