In this experiment, pairs of learners explore how cold water affects circulation. The mammalian diving reflex (MDR) slows circulation when the body is exposed to cold water. Learners measure their pulse on their neck and wrist before and after they place their face in icy water to discover how the mammalian diving reflex works. For safety reasons, this activity requires adult supervision.
Keywords:Data Analysis,NSDL,Data Representation,pulse,Biological science,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-056,heart rate,Mathematics,cold,Heat and Temperature,Social Sciences,Communicating Results,Data Collection,Formulating Explanations,Upper Elementary,oai:nsdl.org:2200/20110926115756789T,mammals,MDR,General science,reflex,Informal Education,Animals,Circulation,Data Analysis and Probability,survival,Gathering Data,Middle School,Life Science,Elementary School,blood,Health/Medicine,Conducting Investigations,Chemistry,Physics,mammalian diving reflex,adaptations,circulation,General,Rate,High School,Science and society,Measurement,Physical science,Education,The Scientific Process