You will understand how blood circulates!(Note: Study note is provided inside the package)Push the button and make water flow to move the balls. By using stethoscope(provided) you can actually visualize and hear the heartbeat.
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You will understand how blood circulates!
(Note: Study note is provided inside the package)
Push the button and make water flow to move the balls. By using stethoscope(provided) you can actually visualize and hear the heartbeat.
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