This GeoGebra "book" is a set of interactive notes that I use to teach Differential Equations at [url=https://www.northernvermont.edu/]Northern Vermont University[/url], Castleton University, and Vermont Technical College in the [url=https://www.vsc.edu/]Vermont State College System[/url]. Interactive applets replace static figures to illustrate the concepts. Many--but not all--of the algebraic hurdles have been shunted to the GeoGebra Computer Algebra System (CAS). In particular, students are not expected to be skillful in second semester calculus integration techniques, linear algebraic skills associated with solving systems of linear algebraic equations, and simplification of complicated expressions. GeoGebra can take care of most of that for us. That said, a firm understanding of the concept and calculation of derivatives is expected. Similarly, knowledge of the core principle of integration as well as elementary techniques up to about u-substitution is also expected.
This is a sequel (or "second season") of sorts to Calculus for the People -- https://www.geogebra.org/m/x39ys4d7 -- so if you want to brush up on elementary differentiation and integration, check it out.
Email me at greg dot petrics at northernvermont dot edu to learn more, or to offer your comments and suggestions.
These notes are open source. Feel free to use them or modify them in any way. I'd appreciate some credit if you republish these elsewhere.
