The walls of the left atrium are slightly thicker than the walls of the right atrium. Oxygen-rich blood from the lungs enters the left atrium through the pulmonary vein. The blood is then pumped into the left ventricle chamber of the heart through the mitral valve. From there, the blood is ready to be pumped into the body to deliver oxygen-rich blood to all bodily tissues.
CGMS offers two tiers of training. Full Certificate students attend a residential Montessori training program in addition to their distance learning component. Primary (Early Childhood) level students spend 3 weeks in one summer session. There are two summer sessions for Elementary students.
1 Montessori education nurtures independence and concentration skills, and views the child as a whole human being, a person in his own right and with his own rights. 2  Learning occurs in an inquisitive, cooperative, and nurturing atmosphere.