Addition Strategies and Flexible Thinking (Grade 2)

This lesson set provides an opportunity for students to develop a deep understanding of addition with two-digit numbers while providing a bridge into addition with three-digit numbers. Students will:  solve “put together” situational problems using base ten blocks and/or a hundreds chart;  determine if the “unknown” in a situational story task represents a part or a whole;  understand that tables can be “read” and can represent part-part-whole relationships;  apply strategies (listed previously) to solve addition problems; and  use a variety of representations to respond to situational word problems.  Standards: 2.OA.A.1, 2.NBT.B.6, 2.NBT.B.7