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2Grade 2 Standards
Top Mathematicians
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The Number System
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2.NS.1.1
Students will be expected to apply mental mathematics strategies to quickly recall basic addition facts to 18 and determine related subtraction facts.
• Performance Indicators
- N10.01 Explain the mental mathematics strategy that could be used to determine basic addition facts.
• Doubles Facts
• Plus One Facts
• One-Apart (Near Doubles) Facts
• Plus Two Facts
• Plus Zero Facts
• Make-10 Facts
• Two-Apart Facts
• Plus Three Facts
- N10.02 Use and describe a personal strategy for determining a sum to 18.
- N10.03 Quickly recall basic addition facts to 18 in a variety of contexts.
- N10.04 Explain the think-addition strategy used to determine a basic subtraction fact.
- N10.05 Use and describe a personal strategy for determining the subtraction facts. -
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2.30Adding Doubles10
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2.41Subtraction with Pictures Up to 1010
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2.42Subtracting Doubles5
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2.43Subtract Two Numbers Up to 1815
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2.44Subtraction Input/Output Tables20
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2.45Subtraction with Sums Up to 10015
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2.46Complete the Subtraction Sentence with Numbers Up to 1810
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2.47Balance Subtraction Equations with Sums Up to 1810
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2.78Subractions Sentences to Describe Pictures15
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2.79Subtraction Sentences with Numbers Up to 1810
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2.84Related Equations with Sums Up to 100015
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2.85Related Equations Up to 1015
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2.NS.1.1
Students will be expected to say the number sequence by
• 1s, forward and backward, starting from any point to 200
• 2s, forward and backward, starting from any point to 100
• 5s and 10s, forward and backward, using starting points that are multiples of 5 and 10 respectively to 100
• 10s, starting from any point, to 100
• Performance Indicators
- N01.01 Extend counting sequence (by 1s), forward and backward.
- N01.02 Extend a given skip counting sequence (by 2s, 5s, or 10s) forward and backward.
- N01.03 Skip count by 10s, given any number as a starting point.
- N01.04 Identify and correct errors and omissions in a given skip counting sequence.
- N01.05 Count a given sum of money with pennies, nickels, or dimes (to 100¢).
- N01.06 Count quantity using groups of 2s, 5s, or 10s and counting on. -
2.NS.1.2
Students will be expected to demonstrate if a number (up to 100) is even or odd.
• Performance Indicators
- N02.01 Use concrete materials or pictorial representations to determine if a given number is even or odd.
- N02.02 Identify even and odd numbers in a given sequence, such as on a hundred chart.
- N02.03 Sort a given set of numbers as even numbers and odd numbers -
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2.4Select Even or Odd10
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2.5Even or Odd I10
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2.NS.1.3
Students will be expected to describe order or relative position using ordinal numbers (up to tenth).
• Performance Indicators
- N03.01 Indicate a position of a specific object in a sequence by using ordinal numbers up to tenth.
- N03.02 Compare the ordinal position of a specific object in two different given sequences. -
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2.NS.1.4
Students will be expected to represent and partition numbers to 100.
• Performance Indicators
- N04.01 Represent a given number using concrete materials, such as ten-frames and base-ten materials.
- N04.02 Represent a given number using coins (pennies, nickels, dimes, and quarters).
- N04.03 Represent a given number using tallies.
- N04.04 Represent a given number pictorially.
- N04.05 Find examples of a given number in the environment.
- N04.06 Represent a given number using expressions (e.g., 24 + 6, 15 + 15, 40 – 10)
- N04.07 Read a number (0–100) given in symbolic or word form.
- N04.08 Record in words a given number (0–20).
- N04.09 Record, symbolically, any number (0–100). -
2.NS.1.5
Students will be expected to compare and order numbers up to 100.
• Performance Indicators
- N05.01 Compare and order a given set of numbers in ascending or descending order and verify the result using a hundred chart, number line, ten-frames, or by making references to place value.
- N05.02 Identify errors in a given ordered sequence.
- N05.03 Identify missing numbers in a given hundred chart.
- N05.04 Identify errors in a given hundred chart. -
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2.9Compare Numbers Up to 100020
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2.10Compare Numbers Up to 10020
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2.11Put Numbers in Order Up to 12020
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2.12Greatest and Least15
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2.13Solve Inequalities10
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2.NS.1.6
Students will be expected to estimate quantities to 100 by using referents.
• Performance Indicators
- N06.01 Estimate a given quantity by comparing it to a referent (known quantity).
- N06.02 Estimate the number of groups of ten in a given quantity using 10 as a referent.
- N06.03 Select between two possible estimates for a given quantity and explain the choice. -
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2.14Rounding with Numbers Up to 500015
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2.NS.1.7
Students will be expected to illustrate, concretely and pictorially, the meaning of place value for numerals to 100.
• Performance Indicators
- N07.01 Explain and show with counters the meaning of each digit for a given 2-digit numeral with both digits the same.
- N07.02 Count the number of objects in a given set using groups of 10s and 1s, and record the result as a 2-digit numeral under the headings of 10s and 1s.
- N07.03 Describe a given 2-digit numeral in at least two ways.
- N07.04 Illustrate using ten-frames and diagrams that a given numeral consists of a certain number of groups of ten and a certain number of ones.
- N07.05 Illustrate using proportional base-ten materials that a given numeral consists of a certain number of tens and a certain number of ones.
- N07.06 Explain why the value of a digit depends on its placement within a numeral.
- N07.07 Represent one unit if shown a pre-grouped model representing ten. -
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2.16Value of Underlined Digit Up to 9915
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2.17Convert Numbers to Tens and Ones Up to 100015
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2.18Convert Numbers to Tens and Ones Up to 9910
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2.19Regrouping Tens and Ones I10
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2.20Regrouping Tens and Ones II20
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2.21Adding Tens and Ones20
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2.NS.1.8
Students will be expected to demonstrate and explain the effect of adding zero to or subtracting zero from any number.
• Performance Indicators
- N08.01 Add zero to a given number and explain why the sum is the same as the addend.
- N08.02 Subtract zero from a given number and explain why the difference is the same as the given number. -
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2.22Addition with a Specific Number50
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2.23Subtracting Zero and All15
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2.NS.1.9
Students will be expected to demonstrate an understanding of addition (limited to 1 and 2-digit numerals) with answers to 100 and the corresponding subtraction by
• using personal strategies for adding and subtracting with and without the support of manipulates
• creating and solving problems that involve addition and subtraction
• explaining and demonstrating that the order in which numbers are added does not affect the sum
• explaining and demonstrating that the order in which numbers are subtracted matters when finding a difference
• Performance Indicators
- N09.01 Solve a given story problem of any type by modelling it with materials or a diagram, and write a number sentence that represents the thinking in the solution.
- N09.02 Solve a given story problem of any type by writing a number expression and combining the numbers to complete the number sentences.
- N09.03 Match a number sentence to a given story problem.
- N09.04 Create an addition or a subtraction number sentence and a story problem for a given solution.
- N09.05 Model addition and subtraction using concrete materials or visual representations and record the process symbolically.
- N09.06 Add a given set of numbers in two different ways and explain why the sum is the same.
- N09.07 Recognize and create equivalent addition and subtraction number sentences. -
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2.23Subtracting Zero and All15
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2.24Related Addition Equations Up to 1010
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2.25Choose Addition Pictures Up to 105
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2.26How to Make a Number with Single Digits Up to 1015
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2.27How to Make a Number - Values Up to 10020
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2.28How to Make a Number - Sums and Numbers Up to 1015
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2.29Write Addition Sentences to Describe Pictures15
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2.30Adding Doubles10
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2.31Addition with Single Digit Numbers with Sums Up to 2015
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2.32Addition with Pictures Up to 105
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2.33Choose Addition Pictures Up to 105
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2.34Addition with Pictures Up to 2010
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2.35Addition Input/Output Tables with Sums Up to 2010
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2.36Complete the Equation with Sums Up to 2010
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2.37Balance Addition Equations with Sums Up to 2010
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2.38Adding Three or More Numbers20
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2.39Choose Subtraction Pictures with Numbers Up to 105
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2.40Related Subtraction Equations Up to 1010
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2.41Subtraction with Pictures Up to 1010
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2.42Subtracting Doubles5
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2.43Subtract Two Numbers Up to 1815
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2.44Subtraction Input/Output Tables20
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2.45Subtraction with Sums Up to 10015
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2.46Complete the Subtraction Sentence with Numbers Up to 1810
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2.47Balance Subtraction Equations with Sums Up to 1810
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2.48Add Tens20
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2.49Add a One Digit Number to a Two Digit Number15
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2.50Add Two Digit Numbers15
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2.51Add Numbers - Sums Up to 100020
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2.52Add Two Numbers Up to 10015
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2.53Addition Input/Output Tables with Numbers Up to 10020
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2.54Complete the Equation with Sums Up to 10020
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2.55Balance Addition Equations with Sums Up to 10020
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2.56Balance Addition Equations with Operands Up to 10020
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2.57Adding Three or More Numbers with One or Two Digits15
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2.58Subtract Tens20
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2.59Subtract Two Numbers - 1 or 2 Digits Up to 2010
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2.60Subtract One-Digit Numbers from Two-Digit Numbers15
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2.61Subtract Two Numbers - Single and Double Digits20
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2.62Subtract Two Numbers - Double Digits Up to 10015
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2.63Ways to Make a Number with Values Up to 10020
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2.64Ways to Make a Number Up to 2010
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2.65Complete the Subtraction Sentence with Sums Up to 10020
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2.66Balance Subtraction Equations with Sums Up to 10015
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2.67Balance Subtraction Equations with Operands Up to 10020
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2.68Addition and Subtraction Up to 10020
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2.69Addition and Subtraction Up to 185
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2.70Add and Subtract - How to Make a Number Up to 10020
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2.71Add and Subtract - How to Make a Number10
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2.72Addition and Subtraction - Balance Equations Up to 10020
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2.73Addition and Subtraction - Balance Equations Up to 1810
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2.74Input/Output Tables: Write the Rule10
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2.75Addition with Sum Up to 10020
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2.76Addition Sentences Up to 10020
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2.77Adding Three or More Numbers20
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2.78Subractions Sentences to Describe Pictures15
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2.79Subtraction Sentences with Numbers Up to 1810
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2.80Subtraction Sentences with Sums Up to 10015
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2.81Addition and Subtraction Up to 2010
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2.83Related Addition Equations Up to 100020
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2.84Related Equations with Sums Up to 100015
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2.85Related Equations Up to 1015
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2.86Related Subtraction Equations with Sums Up to 100020
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2.NS.1.1
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Patterns and Relations
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2.RP.1.1
Students will be expected to demonstrate an understanding of repeating patterns (three to five elements) by describing, extending, comparing, and creating, patterns using manipulatives, diagrams, sounds, and actions.
• Performance Indicators
- PR01.01 Identify the core of a given repeating pattern.
- PR01.02 Describe and extend a given double attribute pattern.
- PR01.03 Create a repeating non-numerical pattern and explain the rule.
- PR01.04 Predict an element of a given repeating pattern using a variety of strategies and extend the pattern up to the tenth element to verify the prediction.
- PR01.05 Translate a repeating pattern from one mode to another.
- PR01.06 Compare two given repeating patterns, and describe how they are alike/different. -
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2.87Mixed Patterns5
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2.RP.1.2
Students will be expected to demonstrate an understanding of increasing patterns by describing, extending, and creating numerical patterns (numbers to 100) and non-numerical patterns using manipulatives, diagrams, sounds, and actions.
• Performance Indicators
- PR02.01 Identify and describe increasing patterns in a variety of given contexts.
- PR02.02 Represent a given increasing pattern concretely and pictorially.
- PR02.03 Identify errors in a given increasing pattern.
- PR02.04 Explain the rule used to create a given increasing pattern.
- PR02.05 Create an increasing pattern and explain the pattern rule.
- PR02.06 Represent a given increasing pattern using another mode.
- PR02.07 Solve a given problem using increasing patterns.
- PR02.08 Identify and describe increasing patterns in the environment.
- PR02.09 Determine missing terms in a given concrete, pictorial, or symbolic increasing pattern and explain the reasoning. -
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2.88Count by a Specific Number20
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2.89Time Patterns15
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2.RP.1.3
Students will be expected to demonstrate and explain the meaning of equality and inequality by using manipulatives and diagrams (0 to 100).
• Performance Indicators
- PR03.01 Determine whether two given quantities of the same object (same shape and mass) are equal by using a balance scale.
- PR03.02 Construct and draw two unequal sets using the same object (same shape and mass) and explain the reasoning.
- PR03.03 Demonstrate how to change two given sets, equal in number, to create inequality.
- PR03.04 Choose from three or more given sets the one that does not have a quantity equal to the others and explain why. -
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2.RP.1.4
Students will be expected to record equalities and inequalities symbolically, using the equal symbol or not equal symbol.
• Performance Indicators
- PR04.01 Determine whether two sides of a given number sentence are equal (=) or not equal (≠). Write the appropriate symbol and justify the answer.
- PR04.02 Model equalities using a variety of concrete representations and record the equality.
- PR04.03 Model inequalities using a variety of concrete representations and record the inequality.
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2.RP.1.1
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Geometry
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2.G.1.1
Students will be expected to sort 2-D shapes and 3-D objects using two attributes and explain the sorting rule.
• Performance Indicators
- G01.01 Determine the differences between two given presorted sets and explain the sorting rule.
- G01.02 Identify and name two common attributes of items within a given sorted group.
- G01.03 Sort a given set of 2-D shapes (regular and irregular) according to two attributes and explain the sorting rule.
- G01.04 Sort a given set of 3-D objects according to two attributes and explain the sorting rule. -
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2.95Identify Solid Figures5
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2.G.1.2
Students will be expected to recognize, name, describe, compare, and build 3-D objects, including cubes and other prisms, spheres, cones, cylinders, and pyramids.
• Performance Indicators
- G02.01 Sort a given set of 3-D objects and explain the sorting rule.
- G02.02 Identify common attributes of cubes and other prisms, spheres, cones, cylinders, and pyramids from given sets of the same 3-D objects.
- G02.03 Identify and describe given 3-D objects with different dimensions.
- G02.04 Identify and describe given 3-D objects with different positions.
- G02.05 Create and describe a representation of a given 3-D object using materials such as modelling clay.
- G02.06 Identify and name examples of cubes and other prisms, spheres, cones, cylinders, and pyramids found in the environment. -
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2.95Identify Solid Figures5
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2.96Identify Simple Planar and Solid Shapes5
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2.97Count Edges5
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2.98Count Faces5
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2.99Count Edges, Vertices and Faces5
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2.100Count Vertices5
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2.101Compare Sides and Corners5
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2.102Geometry of Everyday Objects5
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2.G.1.3
Students will be expected to recognize, name, describe, compare and build 2-D shapes, including triangles, squares, rectangles, and circles.
• Performance Indicators
- G03.01 Sort a given set of 2-D shapes and explain the sorting rule.
- G03.02 Identify common attributes of triangles, squares, rectangles, and circles from given sets of the same type of 2-D shapes.
- G03.03 Identify given 2-D shapes with different dimensions.
- G03.04 Identify given 2-D shapes with different positions.
- G03.05 Identify and name examples of triangles, squares, rectangles, and circles found in the environment.
- G03.06 Create a model to represent a given 2-D shape.
- G03.07 Create a pictorial representation of a given 2-D shape. -
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2.96Identify Simple Planar and Solid Shapes5
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2.103Identify Shapes I5
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2.104Identify Shapes II5
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2.G.1.4
Students will be expected to identify 2-D shapes as part of 3-D objects in the environment.
• Performance Indicators
- G04.01 Compare and match a given 2-D shape, such as a triangle, square, rectangle, or circle, to the faces of 3-D objects in the environment.
- G04.02 Name the 2-D faces of a given 3-D object. -
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2.105Relate Planar and Solid Figures5
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2.G.1.1
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Statistics & Probability
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2.SP.1.1
Students will be expected to gather and record data about self and others to answer questions.
• Performance Indicators
- SP01.01 Formulate a question that can be answered by gathering information about self and others.
- SP01.02 Organize data as it is collected using concrete objects, tallies, checkmarks, charts, or lists.
- SP01.03 Answer questions using collected data. -
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2.SP.1.2
Students will be expected to construct and interpret concrete graphs and pictographs to solve problems.
• Performance Indicators
- SP02.01 Determine the common attributes of concrete graphs by comparing a given set of concrete graphs.
- SP02.02 Determine the common attributes of pictographs by comparing a given set of pictographs.
- SP02.03 Answer questions pertaining to a given concrete graph or pictograph.
- SP02.04 Create a concrete graph to display a given set of data and draw conclusions.
- SP02.05 Create a pictograph to represent a given set of data using one-to-one correspondence.
- SP02.06 Solve a given problem by constructing and interpreting a concrete graph or pictograph. -
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2.106Coordinate Graphs with Decimals and Negative Numbers15
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2.107Coordinate Graphs Review10
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2.108Coordinate Graphs Review with Whole Numbers10
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2.109Interpret Bar Graphs20
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2.110Which Bar Graph Is Correct?20
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2.111Interpret Line Plots5
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2.112Interpret Line Plots with Numbers Up to 405
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2.113Interpret Line Plots with Up to 5 Data Points5
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2.114Create Line Plots5
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2.115Create Line Plots II5
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2.116Interpret Pictographs20
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2.117Create Pictographs5
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2.SP.1.1
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Measurement and Data
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2.MD.1.1
Students will be expected to demonstrate an understanding of the calendar and the relationships among days, weeks, months, and years.
• Performance Indicators
- M01.01 Read a calendar.
- M01.02 Name and order the days of the week and months of the year.
- M01.03 Communicate the number of days in a week and the number of months in a year.
- M01.04 Solve a given problem involving time which is limited to the number of days in a week and the number of months in a year. -
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2.MD.1.2
Students will be expected to relate the size of a unit of measure to the number of units (limited to non-standard units) used to measure length and mass.
• Performance Indicators
- M02.01 Explain why one of two given non-standard units may be a better choice for measuring the length of an object.
- M02.02 Explain why one of two given non-standard units may be a better choice for measuring the mass of an object.
- M02.03 Select a non-standard unit for measuring the length or mass of an object and explain why it was chosen.
- M02.04 Estimate the number of non-standard units needed for a given measurement task.
- M02.05 Explain why the number of units of a measurement will vary depending upon the unit of measure used. -
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2.MD.1.3
Students will be expected to compare and order objects by length, height, distance around, and mass using non-standard units and make statements of comparison.
• Performance Indicators
- M03.01 Estimate, measure, and record the length, height, distance around, or mass of a given object using non-standard units.
- M03.02 Compare and order the measure of two or more objects in ascending or descending order and explain the method of ordering. -
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2.90Long and Short5
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2.91Tall and Short5
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2.92Light and Heavy5
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2.93Holds More or Less5
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2.94Compare Size, Weight and Capacity5
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2.MD.1.4
Students will be expected to measure length to the nearest non-standard unit by using multiple copies of a unit and using a single copy of a unit (iteration process).
• Performance Indicators
- M04.01 Explain why overlapping or leaving gaps does not result in accurate measures.
- M04.02 Count the number of non-standard units required to measure the length of a given object using a single copy or multiple copies of a unit.
- M04.03 Estimate and measure a given object using multiple copies of a non-standard unit and using a single copy of the same unit many times, and explain the results.
- M04.04 Estimate and measure, using non-standard units, a given length that is not a straight line. -
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2.MD.1.5
Students will be expected to demonstrate that changing the position of an object does not alter the measurements of its attributes.
Performance Indicator
- M05.01 Measure a given object, change the position, remeasure, and explain the results. -
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2.MD.1.1