take six minutes to talk with your team - name the five basic skills then talk about why they are different and why they are the same.
Scale generally talk about how these skills/ideas/techniques work to make an actual project. Should be used by a student while the project is in process while the student is considering what he/she could do to make the project better.
Rubrics focus on how well the project demonstrates mastery of the learning targets - the skills - with in the context of a finished project. it is a way to grade a finished project. It will focus on the same basic skills in the scale.