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.
Montessori schools. 1  While a popular choice for pre-school, Montessori is for children from infancy to 18 years (depending on school). 2  Versus public and private schools, Montessori offers a child-centred learning environment (where the teacher is the center of the classroom in any other environment).any parents choose to send their children to Montessori for preschool years, as an introduction to the private school system or even versus traditional (and equally costly) daycare.