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Table of Contents
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CCSSUnit 1: Operations and Algebraic Thinking, Part 1 . . . . . . . . 1
Lesson 1 Understand .the .Meaning .of .Multiplication . . . . . . . . . . 2 . 3 OA 1
Lesson 2 Use .Order .and .Grouping .to .Multiply . . . . . . . . . . . . . . 8 . 3 OA 5
Lesson 3 Split .Numbers .to .Multiply . . . . . . . . . . . . . . . . . . . . .20 . 3 OA 5
Lesson 4 Understand .the .Meaning .of .Division . . . . . . . . . . . . . .30 . 3 OA 2
Lesson 5 Understand .How .Multiplication .and .Division .Are .Connected . . . . . . . . . . . . . . . . . . . . . . . . . . 36 . 3 OA 6
Lesson 6 Multiplication .and .Division .Facts . . . . . . . . . . . . . . . .42 . 3 OA 4, .3 OA 7
Lesson 7 Understand .Patterns . . . . . . . . . . . . . . . . . . . . . . . .52 . 3 OA 9
Unit 1 Interim Assessment . . . . . . . . . . . . . . . . . . . . . . . . . .58
Unit 2: Number and Operations in Base Ten . . . . . . . . . . . . 61
Lesson 8 Use .Place .Value .to .Round .Numbers . . . . . . . . . . . . . 62 . 3 NBT 1
Lesson 9 Use .Place .Value .to .Add .and .Subtract . . . . . . . . . . . . . .72 . 3 NBT 2
Lesson 10 Use .Place .Value .to .Multiply . . . . . . . . . . . . . . . . . . . .84 . 3 NBT 3
Unit 2 Interim Assessment . . . . . . . . . . . . . . . . . . . . . . . . . 92
Unit 3: Operations and Algebraic Thinking, Part 2 . . . . . . . .95
Lesson 11 Solve .One-Step .Word .Problems .Using .Multiplication .and .Division . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96 . 3 OA 3
Lesson 12 Model .Two-Step .Word .Problems .Using .the .Four .Operations . . . . . . . . . . . . . . . . . . . . . . . . . . 108 . 3 OA 8
Lesson 13 Solve .Two-Step .Word .Problems .Using .the .Four .Operations . . . . . . . . . . . . . . . . . . . . . . . . . . 118 . 3 OA 8
Unit 3 Interim Assessment . . . . . . . . . . . . . . . . . . . . . . . . 128
Unit 4: Number and OperationsFractions . . . . . . . . . . . 131
Lesson 14 Understand .What .a .Fraction .Is . . . . . . . . . . . . . . . . . 132 . 3NF 1
Lesson 15 Understand .Fractions .on .a .Number .Line . . . . . . . . . .138 . 3 NF 2 a, .3 NF 2 b
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Table of Contents
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CCSSUnit 4: Number and OperationsFractions (continued)
Lesson 16 Understand .Equivalent .Fractions . . . . . . . . . . . . . . . 144 . 3 NF 3 a
Lesson 17 Find .Equivalent .Fractions . . . . . . . . . . . . . . . . . . . . 150 . 3 NF 3 b, .3 NF 3 c
Lesson 18 Understand .Comparing .Fractions . . . . . . . . . . . . . . . 162 . 3 NF 3 d
Lesson 19 Use .Symbols .to .Compare .Fractions . . . . . . . . . . . . . . 168 . 3 NF 3 d
Unit 5: Measurement and Data . . . . . . . . . . . . . . . . . . . . . 179
Lesson 20 Tell .and .Write .Time . . . . . . . . . . . . . . . . . . . . . . . . 180 . 3 MD 1
Lesson 21 Solve .Problems .About .Time . . . . . . . . . . . . . . . . . . 188 . 3 MD 1
Lesson 22 Liquid .Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . 198 . 3 MD 2
Lesson 23 Mass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208 . 3 MD 2
Lesson 24 Solve .Problems .Using .Scaled .Graphs . . . . . . . . . . . . . 218 . 3 MD 3
Lesson 25 Draw .Scaled .Graphs . . . . . . . . . . . . . . . . . . . . . . . 228 . 3 MD 3
Lesson 26 Measure .Length .and .Plot .Data .on .Line .Plots . . . . . . . . 238 . 3 MD 4
Lesson 27 Understand .Area . . . . . . . . . . . . . . . . . . . . . . . . . 248 . .3 MD 5 a, .3 MD 5 b, .3 MD 6
Lesson 28 Multiply .to .Find .Area . . . . . . . . . . . . . . . . . . . . . . . 254 . 3 MD 7 a, .3 MD 7 b
Lesson 29 Add .Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264 . 3 MD 7 c, .3 MD 7 d
Lesson 30 Connect .Area .and .Perimeter . . . . . . . . . . . . . . . . . . 274 . 3 MD 8
Unit 6: Geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Lesson 31 Understand .Properties .of .Shapes . . . . . . . . . . . . . . . 290 . 3 G 1
Lesson 32 Classify .Quadrilaterals . . . . . . . . . . . . . . . . . . . . . . 296 . 3 G 1
Lesson 33 Divide .Shapes .Into .Parts .With .Equal .Areas . . . . . . . . . 306 . 3 G 2
Common Core State Standards for Mathematics, Grade 3 . . . . . 317

Curriculum Associates, LLC Copying is not permitted.L1: Understand the Meaning of Multiplication2
Understand the Meaning of MultiplicationLesson 1 Part 1: Introduction
Focus on Math Concepts
What is going on when you multiply numbers?
When you multiply, you work with equal groups.
These groups of shells are equal.
These groups of shells are not equal.
Think Multiplication is a way to find how many in all.
When you have equal groups of objects, you can multiplyto find a total. This is called multiplication.
Each group must have the same number of objects as all the other groups. Thats why they are called equal groups.
There are 3 groups. There are 2 shells in each group.
You can write this as 3 3 2. 3 3 2 means 3 groups of 2.
3 groups of 2 shells is 6 shells in all. 3 3 2 5 6
Underline the sentence that tells you what an equal group is.
CCSS3.OA.13.OA.3

Curriculum Associates, LLC Copying is not permitted.3L1: Understand the Meaning of Multiplication
Lesson 1Part 1: Introduction
Think You can use pictures and models to understand multiplication.
A picture can help you see what multiplication means.
3 groups of 4 balls is 12 balls in all.
One factor tells how many groups.
The product is the answer. It tells how many in all.
3 3 4 5 12
The 3 means groups of.
The other factor tells how many are in each group.
When you say 3 3 4 5 12, you say, Three times four equals 12.
You can arrange the equal groups into rows and stack them on top of each other. This is called an array.
3 rows with 4 balls in each row is 12 balls in all.
3 3 4 5 12
Reflect
1 Do the chairs in your classroom make an array? Explain why or why not.
3 3 4 5 12 is a multiplication sentence. The numbers you multiply are called factors.

Part 2: Guided Instruction Lesson 1
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L1: Understand the Meaning of Multiplication4
Explore It
Using a picture to show equal groups can help you think about multiplication.
Use the picture to answer questions 2 through 5.
2 How many fish tanks are there?
3 How many fish are in each tank?
4 How many fish are there altogether?
5 What multiplication sentence could you write to tell about the fish?
Now try these two problems.
6 There are 4 apple trees in Nells backyard. She picked 5 apples from each tree. Draw a model to show the equal groups.
7 What multiplication sentence could you write about the apples?

Part 2: Guided Instruction Lesson 1
Curriculum Associates, LLC Copying is not permitted.5L1: Understand the Meaning of Multiplication
Talk About It
Solve the problems below as a group.
8 Look at the picture you drew for problem 6. Explain how you decided what to draw to help you solve the problem.
9

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