I am writing an application (game) for teaching Maths. I have a problem how to name various objects. The first is clear - Formula (5-3=2). Then I want to have an object holding a definition how to generate set of formulas (generate 5 formulas with plus operator). And finally I need an object that will hold set of these definitions.
The definitions: Round, Test, Test Case The set of definitions: Test, Test Set
What would native speaker choose?