Friday, October 16, 2009

Human Body - Day 4

Today - Heart and Blood


I have to apologize for the pictures.  I HAD to print today's things in red, but that makes it hard to see in the pictures.



We read about the heart from Blood and Guts.  We listened to daddy's heart to hear the sounds it makes.  We learned the difference between the right side and left side.



We saw how the blood circulates out of the heart into the body and then returns to the heart.  The red veins is blood returning to the heart and the blue veins is the blood coming from the heart.



Then, for one of our experiments, we did a stress test.  We measured our heart beat laying down, sitting up, standing, after 25 hops, after 100 hops and after running around the house.



And we talked more about the blood.  I found this worksheet online.  It gave good information about the ratio of white and red blood cells, platelets and plasma.



And we made candy models of the blood.  We didn't have the right ingredients (because I forgot to get them at the store.)  So we made up our own.



We used 5 cut up gumdrops for red blood cells, 5 white chocolate chips for white blood cells, a tsp. of red sprinkles for platelets and 2 Tbsp. of corn syrup for plasma. 

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