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

TX.3.2.A

Place Value Tables of Multi-Digits

Place Value Tables — Multi-Digit

Expanded Form of Multi-Digits

Place Values in Expanded Form — Up to 10K

Place Values in Expanded Form — Up to 999

Regrouping Place Values of Multi-Digits

Place Values Regrouping — Up to 999

TX.3.2.B

Identifying the Place Value of a Digit

Place Value of a Digit — Multi-Digits

Converting Between Place Values of Multi-Digits

Conversions To and From — Up to 9999

Reading and Writing Digits

Reading and Writing Digits — Up to 20

Reading and Writing Digits — Up to 99

TX.3.2.C

Subtraction using Estimation

Subtract By Estimation — Up to 1000

TX.3.2.D

Comparing Values of Multi-Digits

Place Value Comparing Numbers — Up to 999

TX.3.3.F

Equivalent fractions

Equivalent Fractions

TX.3.3.H

Comparing and Ordering Fractions

Comparing Fractions

Ordering Fractions

TX.3.4.A

Addition Word Problems Up to 1000

Addition Word Problems — Up to 1000

Addition Word Problems — Up to 200

Subtraction Word Problems Up to 1000

Subtraction Word Problems — Up to 1000

TX.3.4.B

Addition using Estimation

Add By Estimation — Up to 1000

TX.3.4.C

Recognizing coins and bills

Name the Coin by Picture

Name the Coin by Value

Coin Values by Name

TX.3.4.E

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

TX.3.4.F

Times Tables

Multiplication Times Table — Up to 2 Digits

Relating Multiplication with Division Up to 999

Relating Multiplication with Division

Division Tables Up to 999

Division Tables — Up to 100

Division Tables — Up to 200

TX.3.4.G

Multiplying using Mental Strategies

Split into Smaller Calculations Strategy — Up to 999

Multiplying with Digits Up to 999

Multiplication by Digits — Up to 3 Digits

TX.3.4.H

Sharing & Grouping Up to 999

Sharing and Partitioning — Up to 3 Digits

TX.3.4.I

Even and odd numbers

Recognizing Even Numbers

Recognizing Odd Numbers

TX.3.4.K

Multiplication Word Problems Up to 999

multiplication word problems up to 999

Division Word Problems Up to 999

Division Word Problems — Up to 3 Digits

TX.3.5.B

Dividing with Arrays

Dividing with Arrays — Up to 100

TX.3.5.D

Identifying the Missing Digits (Addition)

Fill in the Blank — Up to 1000

Identifying the Missing Digits (Subtraction)

Dividing with Digits Up to 999

Division By Digits — Up to 3 Digits

TX.3.5.E

Showing patterns in T-tables

Patterns in T-tables Next 2 Patterns

Patterns in T-tables Ascending

T-table Patterns Ascending – Word Problem

T-table Patterns Descending – Word Problem

Patterns in T-tables Next 2 patterns

TX.3.6.C

Area - unit squares and pattern blocks

Area by Unit Squares

Square measure

Converting Square Units

Calculate the Square Area

Calculating and Estimating Area and Perimeter

TX.3.7.B

Perimeter: Grid squares and polygons

Perimeter of Polygons

Perimeter Equation of Polygons

3rd Grade Math

Algebraic Reasoning

Data Analysis

Geometry and Measurement

Number and Operations

Personal Financial Literacy

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