We found 4,067 reviewed resources for Numbers and Operations
Grade 1 Math: Partner Work, Numbers and Operations, Pattern Recognition
Looking for patterns is a key skill young learners need to know. They build number sense by first looking for number patterns in a series of simple addition and subtraction problems that all involve the number zero. They work with a...
Numbers and Operations: Addition and Subtraction Grade 2
2nd CCSS: Adaptable
Using unifix cubes, a spinner, a number line, and fact family triangles second graders will play their way to subtraction competency. They engage in a series of activities that has them playing game that require them to add and subtract...
More Complicated Order of Operations Example
5 mins 7th - 9th
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...
Formative Assessment Task: Number and Operations in Base Ten
3rd - 5th CCSS: Designed
Engage your class in developing their understanding of place value with this simple hands-on activity. Presented with a multi-digit number, young mathematicians use the provided digit cards to create numbers in response to a series of...
Number and Operations: Numerals to 1,000
1st - 2nd CCSS: Adaptable
What a fun set of math operations activities! First, the mysterious Digit Switcher writes letters to your first-graders, challenging them to recognize patterns in three-digit numbers. Then, the class works together analyzing three-digit...
An Appearance of Complex Numbers 2
11th - 12th CCSS: Designed
Help the class visualize operations with complex numbers with a lesson 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 the...
Imaginary Numbers Are Real (Part 9: Closure)
6 mins 9th - 12th CCSS: Adaptable
The last video in a series about imaginary numbers demonstrates the need for complex numbers. Math pupils learn that they need to include the square root of negative one, the building block of the complex numbers, to have a set of...
What is Place Value for Whole Numbers?
9 mins 4th - 6th CCSS: Adaptable
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...
Imaginary Numbers Are Real (Part 3: Cardan's Problem)
5 mins 9th - 12th CCSS: Adaptable
Were complex numbers discovered or invented? A video presentation makes the case for the discovery of square roots of negative one. In order for complex numbers to be real, then they must behave like other numbers, which they do in terms...
Imaginary Numbers Are Real (Part 6: The Complex Plane)
4 mins 9th - 12th CCSS: Adaptable
How do addition and subtraction work on the complex plane? A short video presentation provides a clue on how to add complex numbers geometrically. The video ends with four problems to determine the rules for multiplication on the complex...
Perform Arithmetic Operations with Complex Numbers: High School Math Common Core
9th - 12th
Imagine a world where all the numbers live together harmoniously. Here you have it! Check out these resources that introduce the concept of an imaginary number, go through the operations, and model how to utilize the conjugate.
Divide with Two-Digit Divisors Using Base Ten Blocks
6 mins 5th - 7th CCSS: Designed
How does multiplication help when dividing a number? Prepare your number crunchers to become fluent in dividing multi-digit numbers by relating base ten blocks to the standard algorithm with this video. Reinforce students’ understanding...
Introducing Integers and Their Operations
6th - 8th CCSS: Adaptable
There's nothing negative about this mini-unit on integers! Engaging young mathematicians in a series of hands-on activities and collaborative learning opportunities, this resource offers an excellent way to introduce your class to...