Updated April 16, 2017. Fifth grade can be a scary year for a lot of students. They are moving away from the familiar elementary school toward middle school and their bodies are beginning to change as well. In this unsettling year, there are a number of social, cognitive and physical skills that can help lead to school success.
A module is a logical collection of code within an Assembly. You can have multiple modules inside an Assembly, and each module can be written in different .NET languages (VS, as far as I'm aware, doesn't support creation of multi-module assemblies). Assemblies contain modules. Modules contain classes. Classes contain functions.
Module testing is the testing of complete code objects as produced by the compiler when built from source. A library may be composed of a single compiled object or several compiled objects. There is only a slight difference between unit testing and module testing.