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. Apply properties of operations as strategies to multiply and divide.

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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

Fractions on a Number Line

Fractions with 1 as a Denominator

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 .

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3.NF.A.2 Understand a fraction as a number on the number line. Represent fractions on a number line.

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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.

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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

Comparing Perimeter and Area

Comparing Perimeter and Area 2

3.MD.D.8 Solve real-world and mathematical problems involving perimeters of polygons.

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3.MD.D.8 Solve real-world and mathematical problems involving perimeters of polygons.

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3.MD.D.8 Solve real-world and mathematical problems involving perimeters of polygons.

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GEOMETRY

A. Reason about shapes and their attributes.

Sorting Shapes

Unit Fractions with Shapes

3.G.A.1 Classify Quadrilaterals

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3.G.A.2 Divide Shapes into Parts

Ready Math Lesson 30