A course designed to develop an understanding of the mathematical concepts supporting topics taught at the elementary level. Central to these is the number sense required to teach basic operations (addition, subtraction,multiplication and division) with non-negative integers. Fractions, decimals, mental calculation and estimation are also considered. Students will use visualization, diagrams,manipulatives, and engaging in mathematical conversation to explore alternative ways of understanding and communicating required concepts. This course does not satisfy the mathematics requirement of the General Education Core.