Develops historical background for decimals and uses number lines and grids to model infinite repeating decimals, place value, equality, and inequality of decimals.Subsections: Decimal Terminology and Notation; Models for Decimals; Equality of Decimals; Inequality of Decimals; Rational Numbers; Density of Rational Numbers; Estimation; Problem-Solving Application One-page Math Activity: Decimal Place Value with Base Ten Pieces
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