Powerpoint overview of the Volcanoes. Includes the three types of volcanoes and how they form, general vocabulary, causes and categories of each type. Good introductory lesson that also includes a guiding essential questions. Essential questions guide student learning and set expectation for what students should come away having learned.
Additionally there are slides in between Essential Questions, which may be used as student check points for understanding, as a review activity to open the class the day after teaching or as an exit ticket to check for understanding at the end of the day.