A few of the kids were a little squeamish, but once they'd done it, they all said the finger prick didn't hurt. We had a nice spread of blood types represented, and even with a small sample size, they followed the average blood type percentages pretty well. Then, it was time to try building a working model of a heart atrium and ventricle. They had a lot of fun working on this, and two of the three groups were able to get their model to pump blood from one jar to the next. We could have used another 15 minutes to troubleshoot a little more, but I am linking to the project below for anyone who wants to try again at home. Videos:
The Circulatory System (Bozeman Science) This is an excellent overview that reviews some of the things we've discussed about the heart and blood, but also goes into a lot more detail about how the heart works and the path of the blood that we didn't have time to discuss in class. I highly recommend watching this one and coloring in the heart printable I linked to below. How Your Heart Works (Dr. Bincos) This video is a more simplified, shorter explanation of the circulatory system that might be easier to follow for anyone who finds the first one too complex. Activities: Heart Printable This diagram shows the path blood takes through the heart and would be an excellent tool to use along with one of the videos above. Color the pathway, using different colors for blood with oxygen and blood without. Blood Typing Activity This activity illustrates why certain blood types can or cannot donate to others. It's a nice visual explanation for this and would be fun to do with younger siblings as well. Build a Pumping Heart (from Kiwi Co.) We worked on this in class--it's fun to be able to recreate the valves and vessels and chambers of one side of the heart.
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May 2020
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