2.OA.1.+Use+addition+and+subtraction...

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Operations and Algebraic Thinking 2.OA 1. Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions //, //e.g., by using drawings and equations with a symbol for the unknown number to represent the problem //. //
 * Represent and solve problems involving addition and subtraction. **

Pgs. 65 – 76; 94 – 111; 157 – 185
 * __ Combining and Comparing __ : Close to 100 (Investigation 1: 1 - 2)
 * __ Putting Together and Taking Apart __ : Working Within 100 (Investigation 2: 1 - 4)
 * __ Putting Together and Taking Apart __ : Capture 5 (Investigation 5: 2 - 3)
 * John Van de Walle and LouAnn Lovin, __Teaching Student-Centered Mathematics K-3__:
 * Origo:A//ddition/Subtraction// // Fluency Kits; Mathementals 2; //// Think Tanks //

__ Bridges in Mathematics __

// **Think Math Lessons:** // 2.7; 2.9; 4.1 - 4.2; 4.9; 8.10; 10.7