unidades de medida

http://www.slideshare.net/vivianaopazo/unidades-de-medida-8349506?fb_action_ids=10151807480367278%2C10151807480152278%2C10151807479387278%2C10151807479002278&fb_action_types=slideshare%3Adownload&fb_source=other_multiline&action_object_map=%7B%2210151807480367278%22%3A10150389465584203%2C%2210151807480152278%22%3A10150389465584203%2C%2210151807479387278%22%3A10150389465584203%2C%2210151807479002278%22%3A10150389465584203%7D&action_type_map=%7B%2210151807480367278%22%3A%22slideshare%3Adownload%22%2C%2210151807480152278%22%3A%22slideshare%3Adownload%22%2C%2210151807479387278%22%3A%22slideshare%3Adownload%22%2C%2210151807479002278%22%3A%22slideshare%3Adownload%22%7D&action_ref_map=%5B%5D texto teoria medidas

http://educacion.practicopedia.lainformacion.com/matematicas/como-convertir-medidas-16454  video como convertir medidas