About Us

Why Choose StudyPug

How it works

Pricing

Testimonials

Contact Us

Blog

Basic Math

Algebra

Geometry

Trigonometry

Calculus

Linear Algebra

Differential Equations

Statistics

Chemistry

Organic Chemistry

Physics

Microeconomics

For Students

For Parents

For Home Schoolers

For Teachers

Australia

Canada

Ireland

New Zealand

Singapore

United Kingdom

United States

Sitemap

Terms of Service

Privacy Policy

Master Area and Perimeter Estimation with Unit Squares

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>How to count areas with squares and/or triangles (unit squares and half unit squares)</li>
<li>How to estimate areas of shapes on an area grid</li>
</ul>

 Notes: 
<ul type = "disc">
<li>Review: finding perimeter and area for rectangular figures</li>
</ul>

<center><img src="https://dmn92m25mtw4z.cloudfront.net/img_set/math4-9-4-x-1/v1/math4-9-4-x-1-1376w.jpg" width="600" alt="Calculating and Estimating Area and Perimeter"> </center>

<ul type = "disc">
 <li>How do you find the area of shapes that are not made of squares?
</li>
<ul type = "circle">
<li>If you cut a square diagonally, you will get a triangle (half a square is a triangle)
</li>
</ul></ul>

<center><img src="https://dmn92m25mtw4z.cloudfront.net/img_set/math4-9-4-x-2/v1/math4-9-4-x-2-1376w.jpg" width="600" alt="Calculating and Estimating Area and Perimeter"> </center>

<ul type = "circle">
<ul type = "circle">
<li>If you cut 2 squares diagonally (2 cm2), you will get half the area (1 cm2)
</li>
<li>There are other variations of getting half of a square (1/2 cm2 or 0.5 cm2)
</li>
<li>There will also be cases where you won&apos;t know the exact amount shaded in one square, but you can say whether it is more or less than half
</li>
</ul></ul>

 <center><img src="https://dmn92m25mtw4z.cloudfront.net/img_set/math4-9-4-x-3/v1/math4-9-4-x-3-889w.jpg" width="600" alt="Calculating and Estimating Area and Perimeter"> </center>

<ul type = "disc">
 <li>To estimate areas of a shape on a grid, we can get close to the actual area by:</li>
<ul type = "circle">
<li>Counting all the whole unit squares (fully shaded in or covered by the shape)
</li>
<li>Counting all the half unit squares (most commonly the diagonal triangle)</li>
<li>Rounding any squares shaded more than half up to \(\approx\) 1 cm2</li>
<li>Rounding any squares shaded less than half down to \(\approx\) 0 cm2</li>
</ul></ul>

<center><img src="https://dmn92m25mtw4z.cloudfront.net/img_set/math4-9-4-x-4/v1/math4-9-4-x-4-1378w.jpg" width="600" alt="Calculating and Estimating Area and Perimeter"> </center>

Calculating and estimating area and perimeter

Strategies for estimating area and perimeter with unit squares