Between Never and Always Author:Singer, Margie Part of the math curriculum series Investigations in Number, Data, and Space, grade 5. Investigations have been carefully designed to engage students in key mathematical content as they develop number sense, learn to visualize and describe geometric relationships, and collect and analyze real date. As they explore mathematical problems in dept... more »h, students work together, use a variety of concrete materials and appropriate technology, and express their mathematical thinking through talking, drawing, and writing.« less