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# 3RD GRADE MATH VIDEOS

OPERATIONS AND ALGEBRAIC THINKING

**A. Represent and solve problems involving multiplication and division.**

**B. Understand the properties of multiplication and the relationship between multiplication and division.**

**Break Apart Numbers to Multiply**

3.OA.B.5

Apply properties of operations as strategies to multiply and divide.

Ready Math Lesson 3

**C. Multiply and divide within 100.**

**D. Solve problems involving the four operations and identify and explain patterns in arithmetic.**

NUMBER AND OPERATIONS IN BASE TEN

**A. Use place value understanding and properties of operations to perform multi-digit arithmetic.**

NUMBER AND OPERATIONS - FRACTIONS

**A. Develop an understanding of fractions as numbers.**

**Understanding Equivalent Fractions**

3.NF.A.1

Understand a fraction, 1/𝑏 , as the quantity formed by 1 part when a whole is partitioned into b equal parts (unit fraction); understand a fraction 𝑎/𝑏 as the quantity formed by a parts of size 1/𝑏 . For example, 3/4 represents a quantity formed by 3 parts of size 1/ 4 .

Lesson 14

**Fractions on a Number Line**

3.NF.A.2

Understand a fraction as a number on the number line. Represent fractions on a number line.

Lesson 15

**Fractions with 1 as a Denominator**

3.NF.A.3c

Express whole numbers as fractions and recognize fractions that are equivalent to whole numbers. For example, express 3 in the form 3 = 3/1 ; recognize that 6/1 = 6; locate 4/4 and 1 at the same point on a number line diagram.

Lesson 17

MEASUREMENT AND DATA

**A. Solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects.**

**B. Represent and interpret data.**

**C. Geometric measurement: understand and apply concepts of area and relate area to multiplication and to addition.**

**D. Geometric measurement: recognize perimeter as an attribute of plane figures and distinguish between linear and area measurements.**

**Perimeter**

3.MD.D.8 Geometric Measurement

Solve real-world and mathematical problems involving perimeters of polygons.

Ready Lesson 30

**Comparing Perimeter and Area**

3.MD.D.8 Geometric Measurement

Solve real-world and mathematical problems involving perimeters of polygons.

Ready Lesson 30

**Comparing Perimeter and Area 2**

3.MD.D.8 Geometric Measurement

Solve real-world and mathematical problems involving perimeters of polygons.

Ready Lesson 30

GEOMETRY

**A. Reason about shapes and their attributes.**