This unit on 1800's domestic policy is full of lessons and activities that culminates in students using the design process within the framework of PBL in order to create a better voting system.
Culminates in students creating a product that they can share publicly! Could be online, or through presentations, it's up to you!
As a word document it is customizable.
It is also organized so that it can be uploaded to google drive and shared with students as a playlist/schedule where they can access all the information, keep track of their work, directly upload evidence of their assignments, and ask questions all in one place that's already done for you!
Great for all grading systems including standards based, gradeless and traditional!