# Numbers and Operations Teacher Resources

Find Numbers and Operations lesson plans and worksheets

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EngageNY

#### EngageNY Grade 6 Math Module 2: Arithmetic Operations Including Division of Fractions

Twenty-one lessons and two exams make up a math unit all about decimal operations and division of fractions. By way of direct instruction, discussion, guided practice, collaborative learning, and independent practice scholars solve...

EngageNY

#### EngageNY Precalculus and Advanced Topics Module 1: Complex Numbers and Transformations

Prepare your mathematicians for calculus with a collection of 32 lessons that focus on three topics: linearity, complex number operations as transformations, and the power of right notation. Each lesson includes teacher materials...

Lesson Planet: Curated OER

#### Common Core Algebra 2, Unit 6: Complex Numbers

Three lessons and a review make up Unit 6: Complex Numbers in the Common Core Algebra II series. Designed for the flipped classroom, topics covered are Imaginary Numbers, Complex Numbers, and the Quadratic Formula. Videos explain to the...

EngageNY

#### EngageNY Grade 7 Math Module 2: Rational Numbers

Middle schoolers play the Integer Game to build a mental picture and conceptual understanding of integer operations. Tweens add, subtract, multiply, and divide signed numbersâ€”a practice beneficial inÂ developing their competency of...

EngageNY

#### EngageNY Precalculus and Advanced Topics Curriculum

A 5-module complete precalculus course begins with young mathematicians exploring linearity, complex number operations as transformation, and the power of the right notation. Module 2 has pupils examining incidence relationships in...

EngageNY

#### EngageNY Algebra II Module 1: Polynomial, Rational, and Radical Relationships

The 42 lessons in the Algebra II Module 1 collection enable students to connect polynomial arithmetic to computations with whole numbers and integers. Application and modeling problems include both real world and purely mathematical...

EngageNY

#### EngageNY Algebra II Module 1: Polynomial, Rational, and Radical Relationships

The 42 lessons in the Algebra II Module 1 collection are divided into four topics: Polynomials--From Base Ten to Base X, Factoring-- Its Use and Its Obstacles, Solving and Applying Equationsâ€”Polynomial, Rational and Radical, and A...

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#### Essence of Linear Algebra

The 15 videos in the Essence of Linear Algebra collection teach students how to understand the numerical operations of matrices as well as the geometric intuitions underlying them. The first video in the series details the rationale...

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#### Common Core Algebra 2, Unit 3: Rational Expressions

The five videos in the flipped classroom Common Core Algebra 2, Unit 3 series take up rational expressions.
The first video demonstrates how to find values that are excluded from the domain of rational expressions. Viewers then see how...

EngageNY

#### EngageNY Algebra I Curriculum

The Algebra 1 curriculum set is designed to help scholars develop fluency in
writing, interpreting, and solving linear equations, The 30 lessons in Module 1 are divided into four topics: An Introduction to Functions, the Structure of...

EngageNY

#### EngageNY Precalculus and Advanced Topics Module 2: Vectors and Matrices

Here's a collection for gamers and non-gamers. The 29 lessons in the Calculus and Advanced Topics Module 2 are divided into five topics: Networks and Matrices, Linear Transformation of Planes and Space, Systems of Linear Equations,...

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#### Complex Numbers (Part 1)

In this video, a complex number is defined and graphed on the complex plane. Sal also shows how to add, subtract, and multiply two complex numbers. He starts showing how to divide two complex numbers, but runs out of time and continues...

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#### Complex Numbers (Part 1)

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#### Complex Numbers (Part 2)

This video continues looking at dividing complex numbers by looking at the conjugate of a complex number. The instructor then uses the conjugate to rationalize the denominator of a rational expression with a complex number in the...

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#### Complex Numbers (Part 2)

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#### More Complicated Order of Operations Example

Demonstrating a "really hairy and beastly problem," Sal again shows the power and importance of solving an equation according the order of operations. Additionally, he guides viewers through a step in the equation when there are multiple...

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#### Introduction to Order of Operations

First demonstrating the improper ways of solving an equation (left-to-right, multiplication first), Sal shows viewers how the answer of an equation can be drastically incorrect by neglecting to use the order of operations. He uses...

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#### Order of Operations

Please Excuse My Dear Aunt Sally - or whichever mnemonic your students use for the order of operations - is the focus of this video. Sal takes viewers through various mathematical equations which require the use of the order of...

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#### Dividing Mixed Numbers

Before Sal can divide a mixed number, he has to rewrite it as an improper fraction. He explains that dividing a fraction is the same as multiplying it by its reciprocal and that you can "cancel out" numbers to make multiplying easier.

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#### Adding Whole Numbers and Applications 1

Adding double-digit numbers can seem difficult for some students. But, this Khan Academy video makes this process clear in a developmentally sound way. Students watch as 'Sal' adds the number 46 to 43. He references each number by its...

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#### Study Jams! Determine the Missing Operation in an Equation

Deepen the number sense of your math class with a short presentation on writing equations. Using the relationship between numbers, young mathematicians learn how to determine the missing operator in an equation. A number of opportunities...

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#### Multiplying Whole Numbers and Applications 4

Are your students learning about solving word problems involving multiplication? If they are, then this video could be a perfect complement to your lesson. Sal shows students how to use rounding to estimate the product of a double-digit...

Lesson Planet: Curated OER

#### How Do You Compare Two Whole Numbers?

Two very similar numbers and you have to figure out which one is larger. The teacher diagrams a place value chart and shows you how to write the two numbers to make a comparison.

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#### How Do You Put Whole Numbers in Order From Greatest to Least?

So you want to put some given values in order from greatest to least? The instructor starts out by drawing a place value chart. She then inserts all the numbers into the chart. This helps you visually see their value so you can compare...

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