STEM.M. MATHEMATICS: National Council of Teachers of Mathematics .

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STEM.M. MATHEMATICS: National Council of Teachers of Mathematics

NCTM.1. Number and Operations

1.3. Compute fluently and make reasonable estimates.

1.3.3. Develop and use strategies to estimate the results of whole-number computations and to judge the reasonableness of such results.

1.3.6. Select appropriate methods and tools for computing with whole numbers from among mental computation, estimation, calculators, and paper and pencil according to the context and nature of the computation and use the selected method or tools.

NCTM.12. Connections to the Grade 4 Focal Points

12.5. Number and Operations: Building on their work in grade 3, students extend their understanding of place value and ways of representing numbers to 100,000 in various contexts. They use estimation in determining the relative sizes of amounts or distances. Students develop understandings of strategies for multi-digit division by using models that represent division as the inverse of multiplication, as partitioning, or as successive subtraction. By working with decimals, students extend their ability to recognize equivalent fractions. Students' earlier work in grade 3 with models of fractions and multiplication and division facts supports their understanding of techniques for generating equivalent fractions and simplifying fractions.

NCTM.2. Algebra

2.3. Use mathematical models to represent and understand quantitative relationships.

2.3.1. Model problem situations with objects and use representations such as graphs, tables, and equations to draw conclusions.