Diane Siekmann

Diane Siekmann
3rd Grade Math
80 Lessons
Sunset Canyon School
Phoenix, AZ
Student Environment:
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Pumpkin Problems: Estimates to Actuals
Big Idea: Critical to mathematical success is developing the sophistication of students’ strategies simultaneously with the teaching and application of key mathematical knowledge.
  Favorites (8)   Resources (16)   Reflections (1)
Break It Apart
Big Idea: Teaching subtraction, through place value, solidifies foundational concepts while developing flexibility and fluency.
  Favorites (10)   Resources (21)   Reflections (1)
How Much More Can I  Spend?
Big Idea: Students practice their mental math subtraction strategies using book orders and recording on a balance sheet.
  Favorites (2)   Resources (14)   Reflections (1)
Make A Ten To Subtract
Big Idea: Students learn nines are easy to subtract. Just think ten...take away 1.
  Favorites (3)   Resources (16)   Reflections (1)
Subtract Across Zero Using Number Lines
Big Idea: Using a number line to subtract across zeros supports students conceptual understanding of crossing decades when subtracting.
  Favorites (21)   Resources (19)   Reflections (1)
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