Streams is a set of 15 books for Classes 1 to 5 which combines the core subjects of English, Mathematics, Environmental Studies/Science and Social Studies, and General Knowledge and offers the student the express benefit of a lighter schoolbag. This set of 15 books is structured as follows: Classes 1 and 2; Terms 1 - 3:each term consisting of English, Mathematics, Environmental Studies and General Knowledge. Classes 3 – 5; Terms 1 - 3: each term consisting of English, Mathematics, Science, Social Studies and General knowledge.