For more than twenty years, Carmen A. Castillo has held several positions as a teacher and principal. Currently, she is an educational consultant and trainer for schools in Mexico ...vizualizați mai multeFor more than twenty years, Carmen A. Castillo has held several positions as a teacher and principal. Currently, she is an educational consultant and trainer for schools in Mexico and abroad. She is also a presenter at national and international conferences. vizualizați mai puține