Designed to support students who need practice to build their skills and strategies, most pages provide problems at a Proficient level and an Advanced level along with an Investigation. With the proficient problems, students are generally solving one-step problems in which they need to use one mathematical operation and the language indicates the required operation. The advanced problems involve more sophisticated language and may involve more than one operation in order to calculate the answer. The investigations draw students in to address real-life situations. To successfully solve the investigations, they must think and work mathematically, as well as use their knowledge of a range of mental and written strategies and demonstrate their overall competence in mathematics.