Return to Unit List Grade 3 Unit 2: Addition   Addition Properties and Strategies Your Zoo   Crossword Puzzle   Identification Lesson 1: Algebra: Addition Properties Lesson 2: Algebra: Addition Patterns Lesson 3: Explore Regrouping in Addition Lesson 4: Add Whole Numbers Lesson 5: Estimate Sums Lesson 6: Problem Solving Skill: Estimate or Exact Answer   Add Greater Numbers Treasure Hunt   Crossword Puzzle   Concentration Lesson 1: Add Greater Numbers Chapter 4 Writing for Math Lesson 2: Add More Than Two Numbers Lesson 3: Problem Solving Strategy: Use a Venn Diagram Lesson 4: Choose a Computation Method How Do You Make a Budget?