Google Sites are a very nice extension for students to keep a Learning Portfolio for a personal ongoing record of their learning. They can also publish their learning to share with others (with link only access), or even for the greater public with public permissions.
Portfolio of Learning
Students can set up a google site just to keep a running portfolio of their learning.
Science:
Students can create a single project website with pictures, introductory information, videos, and images of their work progress with concluding thoughts.