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Your challenge is to determine what your fossil is, how old the fossil is, and if the fossil could be found within the bedrock of New York State. You will organize your data about the fossil with the aid of a variety of questions. Based on the data provided and your Earth Science Reference Table, write a scientific explanation using evidence determining if your fossil could have existed in New York State.

The Earth's geologic history tells a story about the inception of life and the rise and fall of species, showing life is fragile in the face of gradual and sudden changes to the environment. In this unit, students will learn how rock and fossil observations in combination with radioactive dating techniques have been used to construct a geologic time scale.

Students model formation of sedimentary rock layers using various types of sediment. Students then model deformation of rock layers using clay. 

This booklet can be used with teams of teachers to work through the resources in Unit 4.

In this 5E sequence students create their own models of sedimentary rock layers using various mixtures of sediment, then model folding and faulting in rock layers using clay. Students use the experience of modeling rock layers to develop an understanding of basic geologic principles. Their thinking is then extended by engaging in an activity in which they correlate rock layers based on composition and fossil evidence.