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The fundamental purpose of the course in Geometry is to formalize and extend students’ geometric experiences from the middle grades. Students explore more complex geometric situations and deepen their explanations of geometric relationships, moving towards formal mathematical arguments. Important differences exist between this Geometry course and the historical approach taken in Geometry classes. For example, transformations are emphasized early in this course. Close attention should be paid to the introductory content for the Geometry conceptual category found in the high school CCSS. The Mathematical Practice Standards apply throughout each course and, together with the content standards, prescribe that students experience mathematics as a coherent, useful, and logical subject that makes use of their ability to make sense of problem situations.

About Downloadable Resources

Geometry Course Overview: provide guidance in developing curricular materials by combining information from the New York State Common Core Learning Standards, the PARCC Model Content Frameworks, NYSED standards clarifications, and the Progressions.

A Story of Functions Curriculum Map and Overview 9-12: provides teachers with a clear picture of the modules at each grade level from Grades 9 to 12.

Scaffolding Instruction for ELLs, Resource Guide for Mathematics: provide guidance to educators on how to take the curriculum materials on EngageNY and provide additional scaffolds for ELL students according to their

Lesson 15 - Secant angle theorem, exterior case