1. Problem Solving 
MST3.E.PS.03.01 
Explore, examine, and make observations about a social problem
or mathematical situation
MST3.E.PS.03.02
 Understand that some ways of
representing a problem are more helpful than others
MST3.E.PS.03.03
 Interpret information correctly, identify the problem, and
generate possible solutions
MST3.E.PS.03.04
 Act out or model with manipulatives activities involving
mathematical content from literature
MST3.E.PS.03.05
 Formulate problems and solutions from everyday situations
MST3.E.PS.03.06
 Translate from a picture/diagram to a numeric expression
MST3.E.PS.03.07
 Represent problem situations in oral, written, concrete,
pictorial, and graphical forms
MST3.E.PS.03.08
 Select an appropriate representation of a problem
MST3.E.PS.03.09
 Use trial and error to solve problems
MST3.E.PS.03.10
 Use process of elimination to solve problems
MST3.E.PS.03.11
 Make pictures/diagrams of problems
MST3.E.PS.03.12
 Use physical objects to model problems
MST3.E.PS.03.13
 Work in collaboration with others to solve problems
MST3.E.PS.03.14
 Make organized lists to solve numerical problems
MST3.E.PS.03.15
 Make charts to solve numerical problems
MST3.E.PS.03.16
 Analyze problems by identifying relationships
MST3.E.PS.03.17
 Analyze problems by identifying relevant versus irrelevant
information
MST3.E.PS.03.18
 Analyze problems by observing patterns
MST3.E.PS.03.19
 State a problem in their own words
MST3.E.PS.03.20
 Determine what information is needed to solve a problem
MST3.E.PS.03.21
 Discuss with peers to understand a problem situation
MST3.E.PS.03.22
 Discuss the efficiency of different representations of a problem
MST3.E.PS.03.23
 Verify results of a problem
MST3.E.PS.03.24
 Recognize invalid approaches
MST3.E.PS.03.25
 Determine whether a solution is reasonable in the context of the
original problem
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2. Reasoning & Proof 
MST3.E.RP.03.01
 Use representations to support mathematical ideas
MST3.E.RP.03.02
 Determine whether a mathematical statement is true or false
and explain why
MST3.E.RP.03.03
 Investigate the use of knowledgeable guessing by generalizing
mathematical ideas
MST3.E.RP.03.04
 Make conjectures from a variety of representations
MST3.E.RP.03.05
 Justify general claims or conjectures, using manipulatives,
models, and expressions
MST3.E.RP.03.06
 Develop and explain an argument using oral, written, concrete,
pictorial, and/or graphical forms
MST3.E.RP.03.07
 Discuss, listen, and make comments that support or reject
claims made by other students
MST3.E.RP.03.08
 Support an argument by trying many cases
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3. Communication 
MST3.E.CM.03.01 
Understand and explain how to organize their thought process
MST3.E.CM.03.02
 Verbally explain their rationale for strategy selection
MST3.E.CM.03.03
 Provide reasoning both in written and verbal form
MST3.E.CM.03.04
 Organize and accurately label work
MST3.E.CM.03.05
 Use written and verbal form to share organized mathematical
ideas through the manipulation of objects, drawings, pictures,
charts, graphs, tables, diagrams, models, symbols and
expressions
MST3.E.CM.03.06
 Answer clarifying questions from others
MST3.E.CM.03.07
 Listen for understanding of mathematical solutions shared by
other students
MST3.E.CM.03.08
 Consider strategies used and solutions found in relation to
their own work
MST3.E.CM.03.09
 Increase their use of mathematical vocabulary and language
when communicating with others
MST3.E.CM.03.10
 Describe objects, relationships, solutions and rationale using
appropriate vocabulary
MST3.E.CM.03.11
 Decode and comprehend mathematical visuals and symbols to
construct meaning
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4. Connections 
MST3.E.CN.03.01
 Recognize, understand, and make connections in their
everyday experiences to mathematical ideas
MST3.E.CN.03.02
 Compare and contrast mathematical ideas
MST3.E.CN.03.03
 Connect and apply mathematical information to solve
problems
MST3.E.CN.03.04
 Understand multiple representations and how they are
related
MST3.E.CN.03.05
 Model situations with objects and representations and be
able to make observations
MST3.E.CN.03.06
 Recognize the presence of mathematics in their daily lives
MST3.E.CN.03.07
 Apply mathematics to solve problems that develop outside
of mathematics
MST3.E.CN.03.08
 Recognize and apply mathematics to other disciplines
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5. Representation 
MST3.E.R.03.01
 Use verbal and written language, physical models, drawing
charts, graphs, tables, symbols, and equations as
representations
MST3.E.R.03.02
 Share mental images of mathematical ideas and
understandings
MST3.E.R.03.03
 Recognize and use external mathematical representations
MST3.E.R.03.04
 Use standard and nonstandard representations with accuracy
and detail
MST3.E.R.03.05
 Understand similarities and differences in representations
MST3.E.R.03.06
 Connect mathematical representations with problem solving
MST3.E.R.03.07
 Construct effective representations to solve problems
MST3.E.R.03.08
 Use mathematics to show and understand physical phenomena
(e.g., estimate and represent the number of apples in a
tree)
MST3.E.R.03.09
 Use mathematics to show and understand social phenomena
(e.g., determine the number of buses required for a field
trip)
MST3.E.R.03.10
 Use mathematics to show and understand mathematical
phenomena (e.g., use a multiplication grid to solve odd and
even number problems)
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1. Number Sense and
Operations 
Number Systems
MST3.E.N.03.01
 Skip count by 25’s, 50’s, 100’s to 1,000 (number systems)
MST3.E.N.03.02
 Read and write whole numbers to 1,000 (number systems)
MST3.E.N.03.03
 Compare and order numbers to 1,000 (number systems)
MST3.E.N.03.04
 Understand the place value structure of the base ten number
system: 10 ones = 1 ten, 10 tens = 1 hundred, 10 hundreds = 1
thousand (number systems)
MST3.E.N.03.05
 Use a variety of strategies to compose and decompose
threedigit numbers (number systems)
MST3.E.N.03.06A
 Use and explain the commutative property of addition (number
systems)
MST3.E.N.03.06B
 Use and explain the commutative property of multiplication
(number systems)
MST3.E.N.03.07
 Use 1 as the identity element for multiplication (number
systems)
MST3.E.N.03.08
 Use the zero property of multiplication (number systems)
MST3.E.N.03.09
 Understand and use the associative property of addition
(number systems)
MST3.E.N.03.10
 Understand fractions are part of a whole unit and as parts of
a collection (number systems)
MST3.E.N.03.11
 Use manipulatives, visual models, and illustrations to name
and represent unit fractions 1/2, 1/3, 1/4, 1/5, 1/6 and 1/10 as
part of a whole or a set of objects (number systems)
MST3.E.N.03.12
 Understand and recognize the meaning of numerator and
denominator in the symbolic form of a fraction (number systems)
 