Numbers and Operations Teacher Resources

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Instructional Video4:11
MinutePhysics

The Order of Operations is Wrong

For Students 7th - 12th Standards
PEMDAS is not all that it is cracked up to be. The short video provides an argument that the order of operations may not be instructionally sound. The presentation shows that understanding the concepts and properties of mathematics...
Instructional Video7:41
Curated OER

How Do You Multiply a Two-Digit Number by a Two-Digit Number Using Partial Products?

For Teachers 5th - 7th
What are partial products? The teacher uses a geometric model to illustrate how to break up double digit numbers to find the product of the numbers being multiplied. It's a good visual for your students who might need to see how the math...
Lesson Plan
Virginia Department of Education

Complex Numbers

For Teachers 10th - 12th
Build on your class' understanding of real numbers as they begin working with complex numbers. Pupils begin with an exploration of i and the patterns in the powers of i. After developing a definition for i, they...
PPT
University of Texas

Complex Numbers

For Students 9th - 12th Standards
Are complex numbers and binomials similar? This stack of slides provides an introduction to complex numbers and shows how to operate with them. The worked examples show a connection between operating with binomials and operating with...
Worksheet
Lone Star College

Integer Order of Operations Worksheet

For Teachers 5th - 7th Standards
Practice, assess, or review mathematicians' skills with this integer worksheet addressing order of operations using positive and negative integers, and solving equations in which letters stand for numbers. 
Instructional Video4:04
Curated OER

What are Inverse Operations?

For Teachers 6th - 12th
Explore inverse operations. Video viewers watch as a teacher shows how to "undo" an operation by using the opposite operation. By the end, learners should grasp that addition is the opposite of subtraction and division is the opposite of...
Instructional Video3:29
Curated OER

What are Inverse Operations?

For Teachers 6th - 9th
Explore inverse operations. Video viewers watch as a teacher shows how to "undo" an operation by using the opposite operation. By the end, learners should grasp that addition is the opposite of subtraction and division is the opposite of...
Instructional Video5:15
Curated OER

How Do You Simplify an Expression Using the Order of Operations?

For Teachers 7th - 11th
Simplify an expression by following the order of operations. Some already know the acronym PEMDAS. But that often gets a little confusing. The teacher demonstrates three steps to simplifying an expression.
Instructional Video2:34
Curated OER

How Do You Use the Order of Operations?

For Teachers 6th - 9th
It is imperative that all your mathematicians know and understand the order of operations. This one skill can make or break young math learners. If they don't understand the order, many wrong answers will be gotten. So take the time to...
Lesson Plan
Curated OER

The Fibonacci Sequence

For Teachers 6th - 8th
Pupils investigate a numerical pattern and look for evidence of mathematical patterns in nature. They solve puzzles and work with a partner to predict sequential numbers in a series.
Instructional Video6:38
Curated OER

How Do You Add Whole Numbers?

For Teachers 6th - 12th
Adding whole numbers can be tricky if you don't get all your numbers in alignment. So make sure to get the place value correct.
Instructional Video7:34
Curated OER

How Do You Divide a Two-Digit Number by a One-Digit Number With No Remainder?

For Teachers 2nd - 5th
The instructor draws a diagram to represent a given value using base 10 blocks. She shows how to divide it up into groups just to give you a visual. She then demonstrates how to solve the problem using the long division method.
Instructional Video4:54
Curated OER

How Do You Determine Which Operations to Use in a Word Problem?

For Teachers 6th - 9th
Word problems can be tricky. Lucky for you there are key words that can help you identify the operation needed to successfully complete any word problem. This tutorial helps you pick out key words and what those words indicate in terms...
Interactive
Scholastic

Study Jams! Addition & Subtraction Equations

For Students 5th - 7th Standards
Zoe is decorating a cake for her grandpa's birthday and needs to know how many more candles to add. Follow along as she explains how to set up and solve algebraic equations in this step-by-step presentation. Equations with negative...
Lesson Plan
Curated OER

Using a Number Line: 5th Grade Math

For Teachers 5th
Working in groups, the class will use what they know about whole number operations to solve a real-world problem involving a number line. They will focus on using the number line to correctly label the placement of whole numbers,...
Instructional Video8:24
Curated OER

How Do You Multiply a Two-Digit Number by a Two-Digit Number Using Partial Products?

For Teachers 6th - 12th
What are partial products? The teacher uses a geometric model to illustrate how to break up double digit numbers to find the product of the numbers being multiplied. It's one method and is a good visual for your students who might need...
Lesson Plan
Alabama Learning Exchange

As If Numbers Weren't Complex Enough Already!

For Teachers 9th - 12th Standards
The class explores the concept of complex numbers on a website to generate their own Mandelbrot sets. They will practice performing operations with complex numbers and then to get a visual understanding, graph the absolute value of a...
Lesson Plan
Curated OER

Negative Numbers

For Teachers 6th - 7th
Sixth and seventh graders investigate the concept of negative numbers. The lesson begins with a review of positive numbers and progresses to the various operations with negative numbers. The lesson includes dialogue for the teacher to...
Worksheet
Curated OER

Numbers and Operations as Words

For Students 4th - 5th
Teach numbers in word form with this activity. In this numbers and operations worksheet, learners solve 22 problems in which numbers are written in word form. Students solve the problems and write their responses in word form. Example:...
Lesson Plan
Curated OER

Domain: Operations and Algebraic Thinking

For Teachers K - 2nd
Practice basic operations for young mathematicians in fun ways! Using two decks of cards (Ace through 10 plus the joker), learners play "memory" by matching numbers that can be added to make 10 and writing number sentences. In another...
Lesson Plan
Curated OER

Numeracy

For Teachers K
Students review numbers, number systems and the number operations through the use of online webpages.
Lesson Plan
Curated OER

Signed Numbers and Order of Operations Ii

For Teachers 8th
In this signed numbers worksheet, 8th graders simplify integer problems through addition, multiplication, division, or subtraction. The majority of the 26 problems contain a minimum of 3 integers, and some more. Four problems contain...
Lesson Plan
Curated OER

Number: Whole Numbers and Decimals

For Teachers 4th - 6th
Students explore whole numbers and decimals. In this decimal lesson, students discover how to perform multiplication with decimals as they complete a worksheet.
Lesson Plan
Curated OER

Signed Numbers and Order of Operations I

For Teachers 8th - 9th
For this signed numbers worksheet, young scholars simplify equations by using the indicated operation. They add, subtract, multiply, and divide equations containing two to four positive and negative integers. Three of the 25 equations...

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