Curated OER
Signs of Change: Tree Rings
Young scholars identify and experiment with dendrochronology (the study of tree rings to answer ecological questions about the recent past) and come up with conclusions as to what possible climatic conditions might affect tree growth in...
Curated OER
How Old Is This Tree?
High schoolers work in pairs to determine the age of a tree using two different methods in this experiment. They collect data about how trees change over time.
Curated OER
Tree-ring Dating
Students complete activity sheets and participate in discussions while they study dendrochronology. They determine a tree's age and recognize how the climate varied over time.
Curated OER
Science: The Age of the Redwoods
Students discover how to estimate the age of redwood trees. They measure the trees' diameters by using string to calculate the circumferences. Students conclude by discussing the science of dendrochronolgy.