Place Value: Key to Making Sense of Numbers

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Place Value Key to Making Sense of Numbers

• EDN 322

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Four characteristics of our Hindu-Arabic Number
System

• Place value The position of the digit
  represents its value
• Base of ten Base meaning a collection.
• Use of zero A symbol for zero exists and allows
  us to represent symbolically the absence of
  something.
• Additive property Numbers can be summed with
  respect to place value

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Modeling

• Hands-on experience with manipulatives (models)
  is essential in establishing and developing the
  concept of place value. All models are based on
  groups of 10.
• Proportional models
• Nonproportional models

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Developing Place Value

• Counting and Patterns
• Regrouping and Renaming
• Estimation and Rounding