In this lesson, students will learn about the imu ( a traditional Hawaiian underground oven), construct a scale drawing/model of an imu individually with instructions for constructing the Imu, justify and critique their individual work and the work of other students, collaboratively construct an authentic Imu to prepare Kālua for a school/community event, and reflect on the process. Students will have to apply knowledge of ratios and proportions and geometry to build a scale model of the imu and determine the appropriate amount of material necessary for the full construction (e.g. volume of the pit to feed class and families, amount of puka rocks, the ratio of rock volume to the size of the pit, amount of ti leaves necessary to cover the top).