I am not a PBL purist, but I use a lot of project-based and problem-based learning in my classroom. Yes, there is a difference, and the experts can go into great detail on this! Purist PBLers will tell you the assessment is built within the PBL. Great...but we have the dark, standardized test cloud looming. My kids and I have found a solution. When we tackle a new PBL, I ask them to make the decisions about what they feel they need to learn to master the concept as the project/problem progresses. All the while, I am secretly planting ideas and information as we go. After the culmination of the PBL, we assess in test format to see where we need to tweak our understanding.
I captured one of our PBLs in progress for a graduate assignment using Adobe Spark (previously Adobe Slate). Student samples are included. Keep in mind my students don't always produce stellar content, but they are 100% engaged and learning!