VARVES: Dating Sedimentary Strata: Geology, Paleontological Patterns

Learners investigate how the age of sedimentary strata is determined. In this sedimentary strata lesson, students work through problems that show that geological history covers millions of years. They distinguish between relative and...

Young scientists roll up their sleeves and get a little dirty in this three-day earth science investigation. Following the scientific method, children monitor the growth of algae in pond water samples in order to determine the role that...

A lesson plan for an activity where students relate weather and climate patterns to understand annual sediment deposition. During the instructional activity students reconstruct climates from the past 300 years using lake sediment data....

In this absolute time worksheet, students define radiometric dating, tree rings and varves as means to measure absolute time. They are given information about each of these methods of dating.

Students experience, through a "dig," the historical discovery of fossils which increasingly link whales to earlier land-dwelling mammals. They encounter the intermediate forms which show changes that lead to the modern whale.