NCES.6.EC.1
# North Carolina Essential Standards for Social Studies

Grade 6
Learning Domain: Economics and Financial Literacy

Standard: Understand how the physical environment and human interaction affected the economic activities of various civilizations, societies and regions.

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Learning Domain: Number and Operations -- Fractions

Standard: Explain why a fraction is equivalent to another fraction by using area and length fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size.

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Learning Domain: Number and Operations -- Fractions

Standard: Compare two fractions with different numerators and different denominators, using the denominators 2, 3, 4, 5, 6, 8, 10, 12, and 100. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with symbols less than, =, or greater than, and justify the conclusions by: Reasoning about their size and using area and length models; Using benchmark fractions 0, one-half, and a whole; Comparing common numerator or common denominators.

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Learning Domain: Number and Operations -- Fractions

Standard: Understand and justify decompositions of fractions with denominators of 2, 3, 4, 5, 6, 8, 10, 12, and 100: Understand addition and subtraction of fractions as joining and separating parts referring to the same whole; Decompose a fraction into a sum of unit fractions and a sum of fractions with the same denominator in more than one way using area models, length models, and equations; Add and subtract fractions, including mixed numbers with like denominators, by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction; Solve word problems involving addition and subtraction of fractions, including mixed numbers by writing equations from a visual representation of the problem.

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Learning Domain: Number and Operations -- Fractions

Standard: Apply and extend previous understandings of multiplication to: Model and explain how fractions can be represented by multiplying a whole number by a unit fraction, using this understanding to multiply a whole number by any fraction less than one; Solve word problems involving multiplication of a fraction by a whole number.

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Learning Domain: Number and Operations -- Fractions

Standard: Use decimal notation to represent fractions: Express, model and explain the equivalence between fractions with denominators of 10 and 100; Use equivalent fractions to add two fractions with denominators of 10 or 100; Represent tenths and hundredths with models, making connections between fractions and decimals.

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Learning Domain: Number and Operations -- Fractions

Standard: Compare two decimals to hundredths by reasoning about their size using area and length models, and recording the results of comparisons with the symbols less than, =, or greater than. Recognize that comparisons are valid only when the two decimals refer to the same whole.

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Learning Domain: Ratio and Proportional Relationships

Standard: Understand the concept of a ratio and use ratio language to: Describe a ratio as a multiplicative relationship between two quantities; Model a ratio relationship using a variety of representations.

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Learning Domain: Ratio and Proportional Relationships

Standard: Understand that ratios can be expressed as equivalent unit ratios by finding and interpreting both unit ratios in context.

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Learning Domain: Ratio and Proportional Relationships

Standard: Use ratio reasoning with equivalent whole-number ratios to solve real-world and mathematical problems by: Creating and using a table to compare ratios; Finding missing values in the tables; Using a unit ratio; Converting and manipulating measurements using given ratios; Plotting the pairs of values on the coordinate plane.

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Learning Domain: Ratio and Proportional Relationships

Standard: Use ratio reasoning to solve real-world and mathematical problems with percents by: Understanding and finding a percent of a quantity as a ratio per 100; Using equivalent ratios, such as benchmark percents (50%, 25%, 10%, 5%, 1%), to determine a part of any given quantity; Finding the whole, given a part and the percent.

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