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What you will like about this lesson
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
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