Interactive
CK-12 Foundation

Sums of Finite Arithmetic Series: Triangular Numbers

For Students 11th - Higher Ed
Using a slider, scholars build triangular numbers and their associated rectangles and use the geometric display to find the pattern to determine the next triangular number. They then relate that number to the area of the rectangle to...
Worksheet
K-5 Math Teaching Resources

Adding Mixed Numbers (Unlike Denominators)

For Students 3rd - 6th Standards
Mix things things up in your elementary math class with a series of problem-solving exercises. Presented with a series of mixed number word problems, young mathematicians are asked to solve them by using either visual fraction...
Lesson Plan
EngageNY

Even and Odd Numbers

For Students 6th Standards
Even or not, here I come. Groups investigate the parity of products and sums of whole numbers in the 17th lesson in a series of 21. Using dots to represent numbers, they develop a pattern for the products of two even numbers; two odd...
Printables
Curriculum Corner

St. Patrick's Day Themed Math and Literacy Practice

For Students K - 1st Standards
Look no further for St. Patrick's Day-themed math and literacy practice worksheets. Math skills allow for practicing counting to 100 by 5s, 10s, and 1s, as well as 10 more or 10 less, writing numbers in word and standard form,...
Worksheet
Inspired By Kindergarten

Numbers 1-10

For Students Pre-K - K
Preschoolers and kindergartners can master numbers 1-10 with a set of math worksheets. Each page features one number that kids trace, represent with tally marks, and write what number they will have after adding or subtracting 1.
Activity
Baylor College

Water: The Math Link

For Teachers 1st - 4th Standards
Make a splash with a math skills resource! Starring characters from the children's story Mystery of the Muddled Marsh, several worksheets create interdisciplinary connections between science, language arts, and math. They...
Lesson Plan
EngageNY

Real-World Positive and Negative Numbers and Zero

For Students 6th Standards
Class members investigate how positive and negative numbers are useful in the real world. Individuals first read a short passage and identify terms indicating positive and negative numbers. They consider situations involving positive...
Printables
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Houghton Mifflin Harcourt

Unit 5 Math Vocabulary Cards (Grade 5)

For Students 5th Standards
Reinforce math vocabulary with a set of flashcards. Twenty-two cards offer either a bold-faced word card or a corresponding definition card equipped with an example and labels. Terms include factor, repeating decimal, unit fraction,...
Worksheet
K-5 Math Teaching Resources

Subtracting Mixed Numbers (Unlike Denominators)

For Students 3rd - 7th Standards
Young mathematicians demonstrate their ability to subtract mixed numbers by completing this collection of fraction word problems. From figuring out the weight of objects in a package, to finding the difference in height between two...
Lesson Plan
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1
Alabama Learning Exchange

Imaginary Numbers? What Do You Mean Imaginary?

For Teachers 9th - 12th Standards
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.
Printables
Curriculum Corner

Valentine's Math and Literacy Centers

For Students K - 1st Standards
Look no further for a Valentine's Day-themed packet intended for math and literacy centers. Learners practice writing, reading, and representing numbers in a variety of ways, including skip counting by 2s, 5s, and 10s to 100. The pink...
Lesson Plan
EngageNY

Grade 5 Math Module 1, Topic D, Lesson 9

For Teachers 5th Standards
Introduces addition of decimals by using unit notation to represent the problem. Pupils use a place value chart to decompose the numbers and then add before connecting to the standard algorithm. 
Assessment
Illustrative Mathematics

Looking at Numbers Every Which Way

For Students 2nd Standards
Assess class members' ability to look at numbers every which way. A helpful instructional activity contain four tasks, including writing numbers as a sum of 100's, 10's, and 1's, and drawing a picture to represent the number.
Handout
Thomson Brooks-Core

Complex Numbers

For Students 10th - 12th
A straightforward approach to teaching complex numbers, this lesson addresses the concepts of complex numbers, polar coordinates, Euler's formula, De moivres Theorem, and more. It includes a practice problems set with odd answers...
Printables
K-5 Math Teaching Resources

Ten Frame Cards

For Students K - 2nd Standards
Support your visual learners on their journey to mathematical understanding with this collection of ten frame cards. Representing numbers from 1 to 42, these pictures can be used in any number of ways to introduce children to the concept...
Activity
Baylor College

Air: The Math Link

For Teachers 1st - 3rd Standards
Inflate this unit on the science of air with these math skills practice and word problems. Accompanying the children's story Mr. Slaptail's Secret, this resource covers a wide range of math topics including the four basic...
Interactive
CK-12 Foundation

Trigonometric Form of Complex Numbers

For Students 11th - Higher Ed Standards
Represent complex numbers in two ways. Pupils use the interactive to convert polar and rectangular representations of complex numbers. The learners drag an overlay back and forth over the coordinate plane to reveal the polar coordinates...
Activity
Baylor College

Resources and the Environment: The Math Link

For Teachers K - 2nd Standards
Take advantage of this interdisciplinary resource and bring together topics in science, language arts, and math. Use characters and events from the story Tillena Lou's Big Adventure as a context for practicing addition and...
Assessment
EngageNY

End-of-Module Assessment Task: Grade 6 Math Module 3

For Students 6th Standards
The last installment of a 21-part module is an end-of-module assessment. Individuals show their understanding of positive and negative numbers on the number line, absolute value, and the coordinate plane in a variety of contexts.
Lesson Plan
EngageNY

Writing and Interpreting Inequality Statements Involving Rational Numbers

For Students 6th Standards
Statements often have multiple interpretations — but not these inequality statements. Scholars compare rational numbers and write inequality statements symbolically. The lesson includes problems that require comparing three numbers.
Lesson Plan
EngageNY

Comparing Integers and Other Rational Numbers

For Students 6th Standards
The ninth installment of a 21-part module has pupils compare integers and rational numbers in decimal and fraction form. They match stories to number lines and compare values in the stories.
Printables
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1
Houghton Mifflin Harcourt

Unit 2 Math Vocabulary Cards (Grade 6)

For Students 6th Standards
Common denominator, invert, and terminating decimal are only a few terms found in a set of math vocabulary math cards. Made up of 40 cards, the set reinforces terms with boldly printed word cards, and definition cards offering an...
Lesson Plan
EngageNY

Trigonometry and Complex Numbers

For Teachers 11th - 12th Standards
Complex numbers were first represented on the complex plane, now they are being represented using sine and cosine. Introduce the class to the polar form of a complex number with the 13th part of a 32-part series that defines the...
Lesson Plan
EngageNY

The Division Algorithm—Converting Decimal Division into Whole Number Division Using Fractions

For Students 6th Standards
Knowing the standard algorithm opens up a whole new world of division. Scholars learn how to convert division involving decimals to division involving whole numbers to use the standard algorithm. Knowing how to multiply with powers of...