Third Grade
Unit 1: Operations and Rounding
Focus of Unit: This unit will develop an understanding of addition, the three
types of subtraction and rounding.
Investigation 2: Addition, Subtraction, & Estimation
Part 1: Addition
Part 2: Take-Away Subtraction
Part 3: Comparative Subtraction
Part 4: Missing Part Subtraction
Part 5: Rounding with a Number Line
Part 6: Rounding Using the Roller Coaster
Suggested Exemplars
*Bulletin Board Border (perimeter)
*Fencing (perimeter)
*Raccoons (subtraction, patterns)
*10 Feet Apartment (More challenging Version) (number sense)
*Mr. Frye’s Lambs (Draw a picture)
*denotes annotated student work attached
HSP Math Lesson Correlation
Unit 1: Number and Operations
Chapter 2 Compare, Order, and Round Numbers
2.4 Round to the Nearest Ten Use SBISD lessons for good first
2.5 Round to the Nearest Hundred instruction and these lessons as a
supplement.
2.6 Number Line
Unit 2: Addition, Subtraction, and Money
Chapter Vocabulary & Activities (Addition) pg 54E
Chapter Vocabulary & Activities (Subtraction) pg 82E
3.1 Addition Properties
3.2 Missing Addends
3.3 Estimating Sums
3.4 Add 2-Digit Numbers
Note: 4.2 is located in the 3rd Nine
Pg 82F Activity: Buying Cookies
Weeks
4.1 Fact Families
4.3 Subtract 2-Digit Numbers
4.4 Model 3-Digit Subtraction
4.5 Subtract 3-Digit Numbers
4.6 Subtract Across Zeros
4.7 Choose a Method
4.8 Problem Solving: Choose an Operation
5.1 Count Bills and Coins
5.2 Compare Money Amounts
5.3 Problem Solving: Make a Table
5.4 Model Making Change
Enrich pg. 124 What’s Your Name Worth
Think Math Lesson Correlation
Chapter 1 Building Operations
Lesson 5.2A Writing Addition Sentences for Jumps (TE Vol. 1 pg. 42)
Lesson 5.3 Extension E5 Adding on the Number Line (TE Vol. 1 pg. 45)
Chp 14 Lesson 5 Grouping Numbers to Add (TE Vol. 2 pg 1092)
and additional practice (TE Vol. 2. pg 1095)