The current curriculum in most introductory college physics classes nationwide centers almost exclusively on content knowledge. Many recent national publications have called for an integration of scientific practices (e.g. Construct and Use Models) into the curriculum to teach students the process of science as well. In the Physics and Astronomy Department here at Michigan State University, we are working with faculty to incorporate practices into our introductory physics courses. As part of this process, we are developing assessment items that integrate both the practices and core ideas of introductory physics. These items will be used as a stepping stone to develop curricular changes in the courses as well. This poster will discuss the item development process by focusing on a specific example.