In this workshop, Geometric Measurement, designed for teachers in the middle and high school grades, participants will become familiar with relevant research in teaching geometric measure and learn how to analyze student work to inform their instruction. They will complete classroom tasks designed to help them learn approaches to teaching geometric measurement to help students develop stronger conceptual understanding and procedural knowledge, especially in linear measurement, area, surface area and perimeter. They will also explore relationships between perimeter and area and between area and surface area. In addition, they will become familiar with virtual manipulatives designed to promote both conceptual and procedural knowledge around geometric measurement. For the final project, participants will complete an analysis of a math task and a personalized version of the student work template for use in their own classrooms.