Thursday, January 12, 2012

Biology: Homeostasis

This week the kids completed their experiment on the effects of different physical activities on body temperature. The results were quite surprising. After performing activities, subjects' body temperature stayed the same or went down. Afterward we discussed sources of error and decided that there were some design issues we wanted to change. Most importantly the kids wondered whether carrying out an activity for one minute would be enough time to produce a measurable change. The kids spent the rest of the class planning out a more extended experiment in which subjects will perform 10 minutes of physical activity and the kids will observe a number of physiological changes in addition to body temperature, such as heart rate, skin color, and amount of sweating. Next week they will carry out this experiment.

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