Why Lesson Planet?
Mount St. Helens erupted on May 18, 1980, devastating plant and animal life for miles around. Two activities are included in this lesson plan. In one, learners evaluate tree rings to determine the age of a tree and the year of a volcano. In the other, they investigate eyewitness accounts to determine the order of events when a volcano erupted. When teaching geology, this real-life example will help bring your curriculum to life.