jueves, 14 de noviembre de 2013

Rocks and minerals.
Here are some videos for you to review the lesson.

http://contenidos.proyectoagrega.es/visualizador-1/Visualizar/Visualizar.do?idioma=en&identificador=es_2009063063_7240030&secuencia=false#
 
Listen carefully. I´m going to ask you some questions that you have to answer if you want to win an extra point

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