This document discusses conversion factors and units of measurement. It explains that conversion factors allow quantities to be converted from one unit to another. A 3-step process is used: 1) identify the starting and ending units, 2) select a conversion factor with the starting units on the bottom and ending units on top, and 3) multiply out the conversion factor. Students then practice converting between made-up units like "wazoos", "gidgets", and "bamboos" using whiteboards before completing an exit slip quiz.