What we like about this set of lessons

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