That does offer slightly better presentation for students with its interactive elements, but otherwise looks pretty standard for an undergrad linear algebra tex

That does offer slightly better presentation for students with its interactive elements, but otherwise looks pretty standard for an undergrad linear algebra textbook in overall presentation. It has many sections that could use some interactive portion with none at all. However, I'll give you that interactive texts (or texts with supplemental interactive material) are often better for some things (and some parts of linear algebra) than a plain dead tree format.