Digital Commons @ Assumption University Digital Commons @ Assumption University Education Department Faculty Works Education Department 2011 Proportional Reasoning Instruction: A Cognitively Guided Proportional Reasoning Instruction: A Cognitively Guided Approach to Professional Development Approach to Professional Development Jessica A. de la Cruz Assumption College, jdelacruz@assumption.edu Follow this and additional works at: https://digitalcommons.assumption.edu/education-faculty Part of the Educational Psychology Commons, and the Teacher Education and Professional Development Commons Recommended Citation Recommended Citation de la Cruz, Jessica A. (2011). Proportional Reasoning Instruction: A Cognitively Guided Approach to Professional Development. In L. R. Wiest & T. Lamberg (Eds.), Proceedings of the 33rd Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education (pp. 1529-1537). Reno, NV: University of Nevada, Reno. This Conference Paper is brought to you for free and open access by the Education Department at Digital Commons @ Assumption University. It has been accepted for inclusion in Education Department Faculty Works by an authorized administrator of Digital Commons @ Assumption University. For more information, please contact digitalcommons@assumption.edu.