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2.N
Number Sense, Properties, and Operations
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2.N.1
The whole number system describes place value relationships from ones to 1,000 and forms the foundation for efficient algorithms
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2.N.1.a
Read and write numbers to 1,000 and identify place value for three-digit numbers
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2.N.1.b
Describe relationships between ones, tens, and hundreds
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2.N.1.c
Explain the value of a digit in a three-digit number
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2.N.1.d
Order a collection of whole numbers
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2.N.2
Formulate, represent, and use algorithms to add and subtract two-digit whole numbers with flexibility, accuracy, and efficiency
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2.N.2.a
Demonstrate fluency with basic addition and subtraction facts to sums of 20
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2.N.2.b
Find the value of a collection of coins and choose coins to have a given value
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2.N.2.c
Create stories and models, including linear and difference, to illustrate addition and subtraction
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2.N.2.d
Select and use appropriate methods to estimate sums and differences or calculate them mentally depending on the context and numbers involved
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2.N.2.e
Apply addition and subtraction concepts to financial decision-making
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2.N.3
Fractions represent parts of a whole object or set
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2.N.3.a
Partition basic shapes, using common fractions such as 1/2, 1/3, and 1/4
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2.N.3.b
Partition sets using common fractions such as 1/2, 1/3, 1/4
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2.P
Patterns, Functions, and Algebraic Structures
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2.P.1
Patterns are based on rules
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2.P.1.a
Count objects by groups of 2, 5, and 10
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2.P.1.b
Identify a missing number in a sequence, and describe a rule
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2.P.1.c
Create and extend repeating patterns of 3-5 elements using a variety of materials such as numbers, letters, shapes, and manipulatives
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2.P.2
Number relationships can be used to develop computation strategies
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2.P.2.a
Use ten-based strategies to solve addition and subtraction facts to 20
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2.P.2.b
Demonstrate the structure of numbers as tens and ones in addition and subtraction
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2.P.2.c
Communicate the inverse relationship between addition and subtraction, and use this relationship to efficiently solve and check problems
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2.D
Data Analysis, Statistics, and Probability
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2.D.1
Visual displays of data can be constructed in a variety of formats
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2.D.1.a
Construct picture graphs and bar graphs from a data set
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2.D.1.b
Read and explain information in picture graphs and bar graphs
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2.D.1.c
Describe data using concepts of median and range
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2.D.2
Mathematical models are used to describe the likelihood of an outcome or event
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2.D.2.a
Collect data using chance devices, such as spinners and describe outcomes as likely or unlikely
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2.D.2.b
Apply the concepts of likely or not likely to decisions from daily life
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2.S
Shape, Dimension, and Geometric Relationships
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2.S.1
Shapes can be created and described by quantifiable attributes
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2.S.1.a
Recognize, describe, and create geometric figures according to given quantifiable attributes such as number of sides and size
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2.S.1.b
Identify symmetry in two-dimensional figures
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2.S.1.c
Use quantifiable attributes to describe and estimate size of objects
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2.S.2
Some attributes of objects are measurable and can be quantified using different tools
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2.S.2.a
Identify the measurable attribute and appropriate unit of measure for an object
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2.S.2.b
Use common objects as non-standard units
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2.S.2.c
Use standard linear measuring tools to measure to the nearest whole unit
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2.S.2.d
Identify common units of time, weight, and temperature and their appropriate use
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