Overview: Students sequence familiar items and then do a similar sequencing activity using fossil pictures to learn how paleontologists use fossils to give relative dates to rock strata. Author/Source: Barber, Marsha and Bartos, Diane Grade level: 6-8 Time: 30 minutes Concepts: The sequence of forms in the fossil record is reflected in the sequence of the rock layers in which they are found and indicates the order in which they evolved. Scientists use fossils to learn about past life. Scientists use geological evidence to establish the age of fossils. Teacher background: Geologic Time

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