• 10/02/13   |   Adjusted: 01/10/17   |   1 file

# Foundations for Addition and Subtraction within 10

Author: Great Minds, as featured on EngageNY

• Description
• Files

Mathematically:

• Begins the journey towards fluency with sums and differences within 20 (2.OA.B.2)
• Sets up fluency foundations/routines with content from prior grades (1.OA.C.6, K.OA.A.4)
• Makes connections between application (2.OA.A.1) and procedural skill/fluency (2.OA.B.2)
• Lesson connects addition and subtraction and treats them together as related ideas
• Relates concrete quantities and abstract symbols (MP.2)

In the classroom:

• Uses multiple concrete representations and visual models to make the mathematics explicit
• Can lead into related discussions (sums beyond 10)
• Prompts students to share their developing thinking and understanding (Student Debrief and throughout lessons)
• Provides opportunities and suggestions for differentiation
• Gives formal and informal opportunities for teachers to check for understanding

• Making the Shifts

How does this set of lessons exemplify the instructional Shifts required by CCSSM?

 Focus Belongs to the major work of second grade Coherence Builds upon first grade work with addition (1.OA.C.6) to set students up for meeting the expectations of 2.OA.A.1 and 2.OA.B.2 Rigor Conceptual Understanding: secondary in these lessons Procedural Skill and Fluency: primary in these lessons (2.OA.B.2) Application: primary in these lessons (2.OA.A.1)