# Numbers and Operations Teacher Resources

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Lesson Planet Curated

#### 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...

Lesson Planet Curated

#### Whack-A-Math Game

From Together.Science (https://www.together.science) scholars learn algebra order of operations concepts while playing a game. Participants match numbers on the board by selecting the operations that combine the rolled dice to that...

Lesson Planet Curated

#### 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...

Lesson Planet Curated

#### 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...

Curated OER

#### 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...

Curated OER

#### 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...

Curated OER

#### Complex Numbers (Part 2)

Khan Academy

#### 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 shows how to divide two complex numbers but runs out of time and continues in the...

Khan Academy

#### 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...

Scholastic

#### 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...

Curated OER

#### 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...

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.

Curated OER

#### 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...

Alabama Learning Exchange

#### Imaginary Numbers? What Do You Mean Imaginary?

Don't worry, this resource actually exists. Scholars learn about imaginary numbers and work on problems simplifying square roots of negative numbers. As an extension, they research the history of imaginary numbers.

Curated OER

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

Bob Prior

#### The Order of Operations

Your learners use many different number representations like positive and negative integers, exponents, radicals, and combinations of operations as they learn and strengthen their use of the order of operations. Thoughtfully organized to...

Curated OER

#### Number Operations

Inject fun into your math review! Pupils review basic math operations with decimals as well as addition and subtraction with simple fractions. In this number operations lesson, students work in groups to create a game for the math skill...

Curated OER

#### How Do You Solve a Word Problem Where You Multiply and Subtract Whole Numbers and Fractions?

There is only one variable in this word problem. Yeah! So unpack the words and write them as a mathematical expression. Then make sure to use the order of operations to solve and arrive at the solution.

EngageNY

#### An Appearance of Complex Numbers 2

Help the class visualize operations with complex numbers with a lesson plan that formally introduces complex numbers and reviews the visualization of complex numbers on the complex plane. The fifth installment of a 32-part series reviews...

Curated OER

#### How Do You Subtract Whole Numbers?

Line up your numbers! The instructor shows you how to line your numbers up by place value. Then step by step she subtracts each place value. She demonstrates how to borrow when the top value is less than the bottom value you are...

Curated OER

#### How Do You Write a Whole Number Given in Expanded Form in Standard Form and in Words?

You've been given a number written in expanded form. You have to write it in standard form, and in word form. The instructor does a nice job illustrating and explaining just how to do both of these operations.

Virtual Nerd

#### What is Place Value for Whole Numbers?

Whole numbers are the natural numbers including zero. The instructor illustrates and explains place value. She draws a place value chart and then defines each term and what the numbers mean. She writes a number in standard form and then...

Curated OER

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

So you want to put some given values in order from least to greatest? 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...

Curated OER

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

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