PowerPoint introducing gas exchange in single celled organisms and insects. Contains a few videos, firstly showing some very interesting single celled organisms (to try and help stimulate student interest), but then of the abdominal pumping movements of a locust. There are a few questions that then follow about gas exchange in insects, which includes a graph about spiracle opening. Where possible, there are links to previously taught year 1 material (i.e. drawing a labelled amino acid). The PPT contains notes with most of the answers to the questions on the PPT. This resource is designed to be used with the class notes for this topic.
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£7.00