SUMMATION
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Make a list or Venn diagram of overlapping circles with the class to identify features in fish and humans that are similar and different. (See chart in Background Information.) Both have ears, eyes and noses, but fish have a lateral line, fins, tails, scales and they use gills to breathe, while people have a neck, arms, legs and hair and breathe air.
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Option: Have older students make a chart comparing the functions of the body parts of fish and humans. (See chart in Background Information.) To move, people use legs, fish use tails; to breathe, people use noses, fish use mouth and gills; etc