In the Life Sciences class, the grade 10 and 11 students have been investigating different aspects of breathing by doing various fun activities.

First we looked at everyone’s tidal volume. This is the amount of air that a person can store in their lungs to use for breathing. In the experiment, each student tried to displace as much water from a five-litre bottle as possible. This led to many laughs, and the emergence of quite a few competitive personalities! Congratulations to Quinn van Heerden and Mr Van der Vyver who managed to (only just!) beat Ms le Roux’s record.

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The grade 10s further investigated the effect of exercise on the amount of carbon dioxide which you breath out, and also the effect of exercise on your pulse rate. Thank you to all the volunteers that agreed to run around at full speed for a full 2 minutes. All in the name of Science!


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