TERC Mathematics Curriculum " Investigations is a complete K-5 mathematics curriculum developed at TERC in Cambridge, Massachusetts. It is designed to help all children understand fundeamental ideas of number and operations, geometry, data, measurements and early algebra" (TERC,2013).
Zhang, G., Zeller, N., Griffith, R., Metcalf, D., & Williams, J. (n.d.). Using the Context, Input, Process, and Product Evaluation Model (CIPP) as a Comprehensive Framework to Guide the Planning, Implementation, and Assessment of Service-learning Programs. Retrieved from , Nancy Zeller, Robin Griffith, Debbie Metcalf, Jennifer Williams, Christine Shea, and Katherine Misulis
Budak, A. (2015). The Impact of a Standards-based Mathematics Curriculum on Students’ Mathematics Achievement: The case of Investigations in Number, Data, and Space. EURASIA Journal of Mathematics, Science & Technology Education.
Glatthorn, A., Boschee, F., Whitehead,B., & Boschee, B. (2012). Curriculum leaderhship: Strategies for development and implementation. Thousand Oaks, CA: Sage.
Investigations 3rd Edition. (2013). Retrieved from https://investigations.terc.edu/
National Science Foundation - Where Discoveries Begin. (n.d.). Retrieved from https://www.nsf.gov/
Reform Agenda - Foundation for Excellence in Education. (2016). Retrieved from http://www.excelined.org/about-us/reform-agenda/