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Master Perimeter: Grid Squares and Polygons Explained

NL.SO.3N1

Using counting to add digits up to 100

Adding By Counting — Up to 100

Multiplying by skip counting up to 99

Multiplication By Skip Counting — Up to 2 Digits

NL.SO.3N10

Adding with Doubles Up to 1000

Adding Doubles — Up to 1000

Addition with Regrouping Up to 1000

Add By Regrouping — Up to 1000

NL.SO.3N11

Multiplying Digits with 5 and 10 Up to 999

Multiplication by Five or Ten — Up to 100

Times Tables

Multiplication Times Table — Up to 2 Digits

Using Models to Multiply Up to 999

Multiplication by Models — Up to 3 Digits

Repeated Addition As Multiplication Up to 999

Multiplication by Repeated Addition — Up to 999

Multiplying with Digits Up to 999

Multiplication by Digits — Up to 3 Digits

Multiplication Tables Up to 999

Multiplication Tables — Up to 100

Multiplication Tables — Up to 200

Multiplication Word Problems Up to 999

multiplication word problems up to 999

NL.SO.3N12

Sharing & Grouping Up to 999

Sharing and Partitioning — Up to 3 Digits

Dividing with Arrays

Dividing with Arrays — Up to 100

Remainders from Division Up to 999

Sharing and Remainders — Up to 3 Digits

Dividing with Digits Up to 999

Division By Digits — Up to 3 Digits

Relating Multiplication with Division Up to 999

Relating Multiplication with Division

Division Word Problems Up to 999

Division Word Problems — Up to 3 Digits

NL.SO.3N13

Equivalent fractions

Equivalent Fractions

NL.SO.3N2

Identifying the Place Value of a Digit

Place Value of a Digit — Multi-Digits

Expanded Form of Multi-Digits

Place Values in Expanded Form — Up to 10K

Place Values in Expanded Form — Up to 999

Reading and Writing Digits

Reading and Writing Digits — Up to 20

Reading and Writing Digits — Up to 99

NL.SO.3N3

Place value tables up to 999

Place Value Tables — Up to 999

Converting Between Place Values of Multi-Digits

Conversions To and From — Up to 9999

Comparing Values of Multi-Digits

Place Value Comparing Numbers — Up to 999

Regrouping Place Values of Multi-Digits

Place Values Regrouping — Up to 999

NL.SO.3N4

Addition using Estimation

Add By Estimation — Up to 1000

Subtraction using Estimation

Subtract By Estimation — Up to 1000

NL.SO.3N5

Place Value Tables of Multi-Digits

Place Value Tables — Multi-Digit

NL.SO.3N6

Simplifying Addition by Making 10s

Making Tens to Add

Addition with Tens and Ones

Adding By Tens — Up to 1000

NL.SO.3N9

Adding with Digits Up to 1000

Add By Digits — Up to 1000

Simplifying Addition by Separating

Addition by Separation — Up to 1000

Addition by Separation — Up to 999

Addition Tables Up to 1000

Add By Number Table — Up to 1000

Addition Word Problems Up to 1000

Addition Word Problems — Up to 1000

Addition Word Problems — Up to 200

Subtracting with Digits Up to 1000

Subtract By Digits — Up to 1000

Subtraction with Regrouping Up to 1000

Subtract with Regrouping — Up to 1000

Subtraction Word Problems Up to 1000

Subtraction Word Problems — Up to 1000

NL.SO.3PR3

auto-gen

What are variables in algebra?

Writing Equations with Variables

Introduction to solving equations with Variables

Solving Equations by Isolating the Variable Addition

Solving Equations by Isolating the Variable Division

Solving Equations by Isolating the Variable Multiply

Solving Equations by Isolating the Variable Subtract

Rewriting Equations with Variables

Introduction to solving patterns in T-tables and equations

T-tables: Complete the Pattern (1-step equations)

T-tables: Write the Equation (1-step equations)

T-tables: Write the Equation (2-step equations)

T-tables: Complete the Pattern Ascending

Identifying the Missing Digits (Addition)

Fill in the Blank — Up to 1000

Identifying the Missing Digits (Subtraction)

NL.SO.3SS5

Perimeter: Grid squares and polygons

Perimeter of Polygons

Perimeter Equation of Polygons

Calculating and Estimating Area and Perimeter

Grade 3

Number

Patterns and Relations

Statistics and Probability

Shape and Space

math

Intro

In this lesson, we will learn:
<ul type = "disc">
<li>Perimeter is the straight-line measurement of the total distance to trace around a shape</li>
<li>The perimeter of a polygon can be found by adding the lengths of all sides together</li>
<li>The perimeter of a figure made of grid squares is found by tracing around the outside edges only</li>
<li>The formula shortcuts for the perimeter of rectangular figures made of grid squares </li>
</ul>

 Notes: 
<ul type = "disc">
<li>Perimeter is the measurement around the outside of a two-dimensional shape</li>
<ul type = "circle">
<li>For a polygon (shape with straight sides only), the perimeter can be calculated by adding all the sides in the shape together</li>
</ul></ul>

<center><img src="https://dmn92m25mtw4z.cloudfront.net/img_set/math4-9-1-x-1/v1/math4-9-1-x-1-1365w.jpg" width="600" alt="Perimeter: Grid squares and polygons"> </center>

<ul type = "disc">
 <li>Grid squares are building blocks of figures and measure 1cm on all sides. </li>
<ul type = "circle">
<li>To find the perimeter of a shape made of grid squares, count each edge around the OUTSIDE of the shape only.</li>
</ul></ul>

<center><img src="https://dmn92m25mtw4z.cloudfront.net/img_set/math4-9-1-x-2/v1/math4-9-1-x-2-1368w.jpg" width="600" alt="Perimeter: Grid squares and polygons"> </center>

<ul type = "disc">
 <li>If grid squares make a rectangular figure (4-sided polygon with 2 pairs of matching sides), then a short cut can be used for finding the perimeter:</li>
<ul type = "circle">
<li>Perimeter =2 &times; length + (2 &times; width)</li>
<li>OR Perimeter =2 &times; (length + width)</li>
</ul></ul>

<center><img src="https://dmn92m25mtw4z.cloudfront.net/img_set/math4-9-1-x-3/v1/math4-9-1-x-3-1368w.jpg" width="600" alt="Perimeter: Grid squares and polygons"> </center>

Perimeter: grid squares and polygons