For science we have been studying the heart. The girls have learned about the structure of the heart and the flow of blood to and from the heart. Apologia had us make a model of the heart using tinted frosting (red for oxygenated blood and blue for un-oxygenated blood), graham crackers to represent the atriums and ventricles and marshmallows to represent the aorta and pulmonary veins. The kids really looked forward to working on their models a bit everyday.
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