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Lesson 4.2: Key Concept: Use Doubles within 20
Chapter
Lesson
4.1 Launch the Chapter with Career
4.1 Family Letter
4.1 Big Idea of the Chapter
4.1 Chapter Vocabulary
4.1 Investigate
4.1 Key Concept Example Video #1
4.1 Connect to Real Life Example Video
4.2 Investigate
4.2 Key Concept Example Video #1
4.2 Connect to Real Life Example Video
4.2 Math Musical
4.3 Investigate
4.3 Key Concept Example Video #1
4.3 Connect to Real Life Example Video
4.4 Investigate
4.4 Key Concept Example Video #1
4.4 Connect to Real Life Example Video
4.5 Investigate
4.5 Key Concept Example Video #1
4.5 Connect to Real Life Example Video
4.6 Investigate
4.6 Key Concept Example Video #1
4.6 Connect to Real Life Example Video
4.7 Using The Problem Solving Plan
Lesson 4.2: Key Concept: Use Doubles within 20
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