Summary: The author continues to explain the journey into algebra. It has long been acknowledged that ‘understanding and using notation’ is key to success in learning algebra. The experiences documented here illustrate how this understanding can become a reality for most learners. Not through some particular alchemy that is beyond replication, but simply by using a well-researched, and crafted software package. This learning media engages, challenges, and provides students with feedback that undoubtedly influences their learning. As you read, remember that the classroom and students described is ‘typical’, exhibiting all the residual features than have the potential to influence the learning, in both a positive or negative sense. So, what makes the difference here? For Part I see [the author, ibid. 232, 21‒24 (2013; ME 2015f.01036)].