This white paper clarifies different purposes elementary students might write in math class and presents four types of mathematical writing. We define "mathematical writing" as writing that encourages students to engage in mathematical reasoning and communication. Each writing type is defined, samples of student work are provided, and additional instructional considerations are addressed.

Casa, T. M., Firmender, J. M., Cahill, J., Cardetti, F., Choppin, J. M., Cohen, J., . . . Zawodniak, R. (2016). Types of and purposes for elementary mathematical writing: Task force recommendations. Retrieved from http://mathwriting.education.uconn.edu.