Grade 2 Math OLS Standards

Geometry

Measurement and Data

Number and Operations in Base Ten

Operations and Algebraic Thinking

Standards for Mathematical Practice

Reason with shapes and their attributes.

Geometry

Represent and interpret data.

Represent and interpret data.

Work with time and money.

Relate addition and subtraction to length.

Measure and estimate lengths in standard units.

Measurement and Data

Use place value understanding and properties of operations to add and subtract.

Use place value understanding and properties of operations to add and subtract.

Understand place value.

Number and Operations Base Ten

Work with equal groups of objects to gain foundations for multiplication.

Add and subtract within 20.

Represent and solve problems involving addition and subtraction.

Operations and Algebraic Thinking

Recognize and identify triangles, quadrilaterals, pentagons, and hexagons based on the number of sides or vertices. Recognize and identify cubes, rectangular prisms, cones, and cylinders.

Recognize and identify triangles, quadrilaterals, pentagons, and hexagons based on the number of sides or vertices. Recognize and identify cubes, rectangular prisms, cones, and cylinders.

Classify shapes by their defining attributes (e.g., quadrilaterals, triangles, number of sides and angles)

Identify cubes, rectangular prisms, cones, cylinders and spheres.

Identify cubes, rectangular prisms, cones, cylinders and spheres.

Identify three-dimensional shapes in the environment.

Identify shapes as two-dimensional or three- dimensional (i.e., flat vs. solid).

Name objects from the environment that are 2D and 3D shapes.

Select an object from the environment and match to a description.

Explore and manipulate shapes tactually or visually.

Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

Partition rectangles into two, three or four equal parts; identify the parts as “halves,” “thirds,” “quarters,” “half of,” “a third of,” or “a quarter of;” and identify the whole as “two halves,” “three thirds,” “four fourths” or “four quarters.”

Recognize the vocab:

Equal to: The same value as.

Fourth: One of four equal parts.

Fraction: Part of a whole.

Half Circle: One of two equal parts of a circle.

Half/Halves: One or more of two equal parts of a whole.

Quarter Circle: One of four equal parts of a circle.

Quarter of: One of four equal parts

Count the number of sections in a rectangle that has been divided into equal parts (e.g., half, quarter, third).

Demonstrate counting columns from left to right.

Demonstrate understanding of same size.

Match the name of the rectangle with its shape.

Name a rectangle and circle from the environment.

Select a rectangle and circle from the environment to describe.

Interact with real world objects that are rectangles tactually or visually.

Partition circles and rectangles into two, three, or four equal shares; describe the shares using the words halves, thirds, or fourths and quarters, and use the phrases half of, third of, or fourth of and quarter of. Describe the whole as two halves, three thirds, or four fourths in real-world contexts. Recognize that equal shares of identical wholes need not have the same shape.

Partition circles and rectangles into two, three, or four equal shares; describe the shares using the words halves, thirds, or fourths and quarters, and use the phrases half of, third of, or fourth of and quarter of. Describe the whole as two halves, three thirds, or four fourths in realworld contexts. Recognize that equal shares of identical

Partition rectangles into two, three or four equal parts; identify the parts as “halves,” “thirds,” “quarters,” “half of,” “a third of,” or “a quarter of;” and identify the whole as “two halves,” “three thirds,” “four fourths” or “four quarters.”

Partition circles into two or four equal parts; identify the parts as “halves,” “quarters,” “half of,” “a third of” or “a quarter of;” and identify the whole as “two halves,” “three thirds,” “four fourths” or “four quarters.”

Recognize the vocab:

Equal to: The same value as.

Fourth: One of four equal parts.

Fraction: Part of a whole.

Half Circle: One of two equal parts of a circle.

Half/Halves: One or more of two equal parts of a whole.

Quarter Circle: One of four equal parts of a circle.

Quarter of: One of four equal parts.

Match a model with “halves,” “thirds,” fourths” or “quarters.”

Understand that smaller shapes are made when dividing shapes into parts

Count the number of sections in a circle or rectangle that has been divided into equal parts (e.g., half, quarter, third).

Demonstrate counting columns from left to right.

Reason with shapes and their attributes.

Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.

Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.

Identify numbers on a measuring tool.

Demonstrate lining up an object at 0.

Recognize the placement of the measuring tool when measuring the length starts at 0.

Identify 0 on a measuring tool as the starting point of an object to be measured.

Measure an object with a given tool such as a ruler, yardstick, meter stick or measuring tape.

Demonstrate lining up an object at 0.

Recognize the placement of the measuring tool when measuring the length starts at 0.

Identify 0 on a measuring tool as the starting point of an object to be measured.

Understand that length is the size of an object.

Match an object to measured with the closest in size measuring tool.

Match the name of the measuring tool to the tool.

Interact with various sized objects that can be measured.

Interact with with a given tool such as a ruler, yardstick, meter stick or measuring tape.

Organize, represent, and interpret data with up to four categories; complete picture graphs when single-unit scales are provided; complete bar graphs when single-unit scales are provided; solve simple put-together, take-apart, and compare problems in a graph.

Organize, represent, and interpret data with up to four categories; complete picture graphs when singleunit scales are provided; complete bar graphs when single-unit scales are provided; solve simple puttogether, take-apart, and compare problems in a graph. See Table 1, page 95.

Create a bar or picture graph, with given data and answer questions about the graph using a single unit scale.

Create a picture graph, given data and answer questions about the graph.

Classify and count objects in categories of a data set (e.g., given a set of colored cubes: identify if any are red, count how many are red, etc.).

Demonstrate putting together and taking apart of objects.

Interact with data.

Match parts of a graph to their function.

Identify parts of a graph.

Interact with a graph tactually or visually.

Measure the length of an object twice, using length units of different lengths for the two measurements; describe how the two measurements relate to the size of the unit chosen.

Measure the length of an object twice, using length units of different lengths for the two measurements; describe how the two measurements relate to the size of the unit chosen.

Order objects based on their length.

Identify numbers on a measuring tool.

Measure an object with a given tool such as a ruler, yardstick, meter stick or measuring tape.

Recognize the vocabulary longer, shorter, about the same size.

Demonstrate lining up an object at 0.

Recognize the placement of the measuring tool when measuring the length starts at 0.

Understand that length is the size of an object.

Match an object to measured with the closest in size measuring tool.

Match the name of the measuring tool to the tool.

Interact with various sized objects that can be measured.

Interact with with a given tool such as a ruler, yardstick, meter stick or measuring tape.

Estimate lengths using units of inches, feet, centimeters, and meters.

Estimate lengths using units of inches, feet, centimeters, and meters.

Match the unit of length to the tool.

Measure an object using non-standards units. (e.g., same length pencils, paperclips).

Identify which measurement tool to use (e.g., use a ruler to measure length; use a scale to find weight)

Interact with objects to be measured.

Interact with measuring tools.

Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.

Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard-length unit.

Understand to get the difference in length between two objects what operation is used.

Measure and compare the length of an object with two different standard or nonstandard tools.

Measure to determine how much longer one object is than another using a non-standard unit.

Demonstrate lining up an object at 0.

Identify 0 on a measuring tool as the starting point of an object to be measured.

Identify numbers on a measuring tool

Understand the vocabulary longer and shorter

Order objects by their size

Interact with a measuring tool

Interact with objects to be measured

Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same whole number units, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem. Drawings need not show details, but should show the mathematics in the problem. (This applies wherever drawings are mentioned in the Standards.)

Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same whole number units, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem. Drawings need not show details, but should show the mathematics in the problem. (This applies wherever drawings are mentioned in the Standards.)

Solve addition and subtraction word problems involving lengths.

Solve addition word problems involving length.

Set-up a equation from a given word problem.

Measure the length of two objects using non- standard units to determine the total length of the two objects combined.

Identify the operation used when interpreting the word problem.

Recognize that words can be represented by numbers.

Match subtract (-) to terms such as: take away, take apart, minus, subtract

Match add (+) to terms such as: count on, plus, put together, group.

Describe or demonstrate - as taking away using multi-sensory models.

Describe or demonstrate + as putting together using multi-sensory models.

Follow along and mimic “putting together” and “taking apart” as demonstrated using multi-sensory models to represent addition and subtraction.

Engage in demonstrations using multi-sensory models to represent addition and subtraction equations.

Interact with a word problem.

Interact with a drawing.

Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points corresponding to the numbers 0, 1, 2, …, and represent whole-number sums and differences within 100 on a number line diagram.

Represent whole numbers as lengths from 0 on a number line diagramG with equally spaced points corresponding to the numbers 0, 1, 2,..., and represent whole-number sums and differences within 100 on a number line diagram.

Add or subtract using a number line

Count on a number line

Identify 0 on a number line

Demonstrate that moving forward is addition and moving backwards is subtraction on a number line.

Identify numbers on a number line.

Interact with a number line.

Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

Tell time to the nearest 15 minute intervals on digital and analog clocks.

Tell time to the nearest hour and half-hour intervals on digital and analog clocks.

Tell time to the nearest hour on digital and analog clocks.

Identify events that happen in the morning (a.m.) or afternoon/evening (p.m.).

Match an event to the time of the day that it might happen in the morning (a.m.) or afternoon/evening (p.m.).

Match (a.m.) to the morning and (p.m.) to the night

Interact with a clock

Solve problems with money.

Solve problems with money. a. Identify nickels and quarters by name and value. b. Find the value of a collection of quarters, dimes, nickels, and pennies. c. Solve word problems by adding and subtracting within 100, dollars with dollars and cents with cents (not using dollars and cents simultaneously) using the $ and ₵ symbols appropriately (not including decimal notation).

Identify nickels and quarters by name and value.

Identify coins/bills and match to their values and corresponding symbol ($, ¢).

Find the value of a collection of quarters, dimes, nickels, and pennies.

Solve problems involving a combination of coins and dollar bills within a word problem

Solve word problems by adding and subtracting within 100, dollars with dollars and cents with cents (not using dollars and cents simultaneously) using the $ and ₵ symbols appropriately (not including decimal notation).

Identify the operation used when interpreting the word problem.

Recognize that words can be represented by numbers.

Understand that (+) symbol is addition (-) symbol is subtraction and (=) symbol is equal

Interact with a word problem.

Count by 1’s, 5’s, 10’s.

Sort like coins together

Match like coins and one-dollar bills.

Select the correct coins and/or bills to match a given amount.

Identify coins (quarters, dimes, nickels, pennies).

Interact with coins and dollars.

Generate measurement data by measuring lengths of several objects to the nearest whole unit or by making repeated measurements of the same object. Show the measurements by creating a line plot, where the horizontal scale is marked off in whole-number units.

Generate measurement data by measuring lengths of several objects to the nearest whole unit or by making repeated measurements of the same object. Show the measurements by creating a line plotG, where the horizontal scale is marked off in whole-number units.

Gather data (e.g., measure the length of an object) and graph the data on a line plot.

Graph given measurement data on a line plot.

Interact with a line plot.

Identify numbers on a number line.

Demonstrate lining up an object at 0.

Identify 0 on a measuring tool as the starting point of an object to be measured.

Identify numbers on a measuring tool.

Understand the vocabulary longer and shorter.

Order objects by their size.

Explore objects with different measurements.

Interact with a measuring tool.

Interact with objects to be measured tactually or visually.

Measure and estimate lengths in standard units.

Relate addition and subtraction to length.

Work with time and money.

Represent and interpret data.

Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:

Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases: a. 100 can be thought of as a bundle of ten tens - called a “hundred.” b. The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).

100 can be thought of as a bundle of ten tens - called a "hundred."

Identify the correct, expanded form given a model or object representation of a two-digit number.

The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).

Understand the position of the digit changes the place value

Write numbers.

Identify numbers

Recognize 10 bundles of ones equals one hundred.

Sort like objects into bundles of 10 ones.

Sort like objects.

Understand a two digit number represents tens and ones.

Understand a one digit number represent ones.

Interact with a bundle of objects.

Engage with a objects.

Count forward and backward within 1,000 by ones, tens, and hundreds starting at any number; skip-count by 5s starting at any multiple of 5.

Count forward and backward within 1,000 by ones, tens, and hundreds starting at any number; skipcount by 5s starting at any multiple of 5.

Count to 100 by 1’s, 5’s, 10’s

Engage with real world counting of objects.

Orally count, sign or count using assistive technology, with 1 second automaticity.

Participate in fluency activities. (using assistive technology switches or voice output devices as needed)

Engage in fluency activities, songs, rhymes, tools.

Count backward sequentially.

Count forward sequentially.

Represent a number of objects with a written numeral.

Match a number of objects with a written numbers.

Read and write numbers to 1,000 using base-ten numerals, number names, expanded form, and equivalent representations, e.g., 716 is 700 + 10 + 6, or 6 + 700 + 10, or 6 ones and 71 tens, etc.

Read and write numbers to 1,000 using base-ten numerals, number names, expanded formG, and equivalent representations, e.g., 716 is 700 + 10 + 6, or 6 + 700 + 10, or 6 ones and 71 tens, etc.

Represent a number with 1’s, 10’s and 100’s with objects or bundles of objects.

Demonstrate by matching, drawing, or labeling what each digit in a number represents.

Understand that expanded form is splitting numbers in to parts.

Count to 100 by 1’s, 5’s, 10’s

Count backward sequentially.

Count forward sequentially.

Partition objects for counting.

Represent a number of objects with a written numeral

Match a number of objects with a written numbers

Understand that (+) symbol is addition

Interact with a group of objects to be counted

Orally count, sign or count using assistive technology, with 1 second automaticity.

Participate in fluency activities. (using assistive technology switches or voice output devices as needed)

Engage in fluency activities, songs, rhymes, tools.

Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.

Compare two threedigit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.

Compare two-digit numbers based on values of the digits in each place, using >, =, and < symbols (e.g., 56 >52; 45<56).

Compare one-digit numbers, as shown in the picture below, based on values using >, =, and < symbols (e.g., 6 >2; 5<6).

The greater the number of digits the greater the number.

Identify how many numbers are in the numbers to compare.

Identify whether a set of objects is “greater than,” “less than” or “same as or equal to” another set of objects.

Understand place value as ones, tens, and hundreds.

Match sets of numbers to their respective number.

Match objects to a number.

Count objects.

Sort groups of objects.

Engage in math activities or games that practice the vocabulary “greater than,” “less than” or “same as or equal to”

Engage with sets of objects to compare.

Engage with objects that can be counted.

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

Add and subtract up to the sum of 50 using strategies based on place value (e.g., collecting the tens, collecting the ones, and composing ten ones to make a ten).

Add and subtract up to the sum of 20 using strategies based on place value.

Add and subtract up to the sum of 10 using models and concrete objects.

Count backward

Count forward

Understand associative and commutative properties

Understand that (+) symbol is addition (-) symbol is subtraction and (=) symbol is equal

Recognize that addition and subtraction of whole numbers are based on sequential counting.

Understand place value as ones, tens, and hundreds.

Understand that 10 bundles of ones equal 100.

Understand that 10 ones equal 1 ten in a bundle.

Write the numbers 0-100.

Identify numbers 0-100.

Match numbers 0-100.

Engage with putting together and taking apart using models or objects.

Engage in 1:1 correspondence.

Match a number to the objects.

Interact in grouping like objects together.

Count objects and groups of objects.

Interact with a group of objects to be counted.

Orally count, sign or count using assistive technology, with 1 second automaticity.

Participate in fluency activities. (using assistive technology switches or voice output devices as needed).

Engage in fluency activities, songs, rhymes, tools.

Add up to four two-digit numbers using strategies based on place value and properties of operations.

Add up to four twodigit numbers using strategies based on place value and properties of operations.

Add 2 two-digit numbers using at least one strategy (e.g., concrete models or drawings, decomposing numbers, or strategies based on place value, properties of operations, and/ or relationships between addition and subtraction).

Add and subtract 2 two-digit numbers (multiples of 10) using at least one strategy (e.g., concrete models or drawings decomposing numbers, or strategies based on place value, properties of operations, and/ or relationships between addition and subtraction).

Add and subtract 1 two-digit number and 1 one- digit number, using models and concrete objects.

Add tens on their own.

Add ones on their own.

Understand that two digits is tens.

Understand that one digit is ones.

Understand that (+) symbol is addition and (=) symbol is equal

Engage with putting together and taking apart using models or objects

Engage in 1:1 correspondence.

Match a number to the objects.

Interact in grouping like objects together.

Engage with sets of objects.

Engage with numbers.

Add and subtract within 1,000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; record the strategy with a written numerical method (drawings and, when appropriate, equations) and explain the reasoning used. Understand that in adding or subtracting three-digit numbers, hundreds are added or subtracted from hundreds, tens are added or subtracted from tens, ones are added or subtracted from ones; and sometimes it is necessary to compose or decompose tens or hundreds.

Add and subtract within 1,000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; record the strategy with a written numerical method (drawings and, when appropriate, equations) and explain the reasoning used. Understand that in adding or subtracting three-digit numbers, hundreds are added or subtracted from hundreds, tens are added or subtracted from tens, ones are added or subtracted from ones; and sometimes it is necessary to compose or decompose tens or hundreds.

Add 3 two-digit numbers using at least one strategy (e.g., concrete models or drawings, decomposing numbers, or strategies based on place value, properties of operations, and/ or relationships between addition and subtraction).

Add 2 two-digit numbers using at least one strategy (e.g., concrete models or drawings, decomposing numbers, or strategies based on place value, properties of operations, and/ or relationships between addition and subtraction).

Add and subtract 2 two-digit numbers (multiples of 10) using at least one strategy (e.g., concrete models or drawings decomposing numbers, or strategies based on place value, properties of operations, and/ or relationships between addition and subtraction).

Add and subtract 1 two-digit number and 1 one- digit number, using models and concrete objects.

Add 100’s on their own

Add 10’s on their own.

Add 1’s on their own.

Demonstrate taking apart is subtraction and demonstrate putting together is adding

Understand that three digits is 100’s.

Understand that two digits is 10’s.

Understand that one digit is 1’s.

Understand that (+) symbol is addition (-) symbol is subtraction and (=) symbol is equal.

Count numbers 0-100 forward and backward.

Match subtract (-) to terms such as: take away, take apart, minus, subtract

Match add (+) to terms such as: count on, plus, put together, group.

Describe or demonstrate - as taking away using multi-sensory models.

Describe or demonstrate + as putting together using multi-sensory models.

Follow along and mimic “putting together” and “taking apart” as demonstrated using multi-sensory models to represent addition and subtraction.

Engage in demonstrations using multi-sensory models to represent addition and subtraction equations.

Engage in 1:1 correspondence.

Match a number to the objects.

Interact in grouping like objects together.

Engage with base 10 blocks.

Engage with concrete models and drawings.

Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.

Mentally add 10 or 100 to a given number 100- 900, and mentally subtract 10 or 100 from a given number 100-900.

Add or subtract 100 to or from a given number.

Add or subtract 10 to or from a given number up to 100.

Add 100 to a given number with visual or physical representations.

Add 10 to a given number with visual or physical representations.

Partition and combine tens and ones

Partition small numbers

Count forward and backward by 100’s to 1000.

Count forward and backward by 10’s to 100.

Identify the 10’s column on a 100 chart.

Identify the number 100.

Identify the number 10.

Engage with the numbers 10 or 100.

Orally count, sign or count using assistive technology, with 1 second automaticity.

Participate in fluency activities. (using assistive technology switches or voice output devices as needed).

Engage in fluency activities, songs, rhymes, tools.

Explain why addition and subtraction strategies work, using place value and the properties of operations. Explanations may be supported by drawings or objects.

Explain why addition and subtraction strategies work, using place value and the properties of operations. Explanations may be supported by drawings or objects.

Identify or create a model that can be used to solve either an addition or a subtraction problem.

Identify or create a model that can be used to solve an addition problem.

Identify which model represents an addition problem, given a choice of two models.

Two digit equals 10’s

Understand 1 digit equals 1’s

Understand there are relationships among number

Count whole numbers sequentially

Write numbers

Match numbers to objects

Represent numbers with objects

Engage with numbers

Understand place value.

Use place value understanding and properties of operations to add and subtract.

Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

Use addition and subtraction within 100 to solve one- and two- step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem. See Table 1, page 95.

Solve one and two step addition s and subtraction word problems within 50, involving situations where one is “adding to,” “taking from,” “putting together” and “taking apart,” using models or objects.

Solve addition and subtraction word problems within 20, involving situations where one is “adding to,” “taking from,” “putting together” and “taking apart,” using models or objects.

Solve addition and subtraction word problems within 10 involving situations where one is “adding to,” “taking from,” “putting together” and “taking apart,” using models or objects.

Identify whether the number of objects in one group is greater than, less than, or equal to the number of objects in another group

Understand that (+) symbol is addition (-) symbol is subtraction and (=) symbol is equal.

Engage with putting together and taking apart using models or objects.

Engage in 1:1 correspondence.

Engage in grouping like objects together.

Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

FluentlyG add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers. See standard 1.OA.6 for a list of mental strategies.

Understand associative and commutative properties

Understand that (+) symbol is addition (-) symbol is subtraction and (=) symbol is equal

Write the numbers 0-10.

Identify numbers 0-20.

Match numbers 0-20.

Engage with putting together and taking apart using models or objects

Engage in 1:1 correspondence

Interact in grouping like objects together.

Orally count, sign or count using assistive technology, with 1 second automaticity from 1-20.

Participate in fluency activities. (using assistive technology switches or voice output devices as needed)

Engage in fluency activities, songs, rhymes, tools. (numbers 1-20)

Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.

Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.

Identify the number of objects in a group (of up to 20) as odd or even.

Identify the number of objects in a group (of up to 10) as odd or even.

Represent a problem with groups of objects 4 x 2 e.g. 4 groups of 2 pencils.

Represent a number with group of objects e.g. 2 = 2 pencils.

Participate in grouping objects together by 2s.

Understand that (x) symbol is multiplication (-) and (=) symbol is equal.

Engage with putting together and taking apart using models or objects.

Engage in 1:1 correspondence.

Engage in grouping like objects together.

Engage with like objects.

Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.

Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.

Add the number of objects in an array with up to 5 rows and 4 columns, and represent in an equation.

Add the number of objects in an array with up to 3 rows and 3 columns.

Recognize a rectangular array.

Write numbers to objects counted.

Recognize that the term sum is related to an addition problem.

Match objects counted with the corresponding number.

Count objects.

Arrange objects into like groups to show repeated addition.

Understand that (+) symbol is addition and (=) symbol is equal.

Engage with putting together models or objects.

Engage in 1:1 correspondence

Sort objects into like groups.

Interact with with a group of like objects.

Represent and solve problems involving addition and subtraction.

Add and subtract within 20.

Work with equal groups of objects to gain foundations for multiplication.

Make sense of problems and persevere in solving them.

Reason abstractly and quantitatively.

Construct viable arguments and critique the reasoning of others.

Model with mathematics.

Use appropriate tools strategically.

Attend to precision.

Look for and make use of structure.

Look for and express regularity in repeated reasoning.