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Lesson Plan
EngageNY

Trigonometric Identity Proofs

For Teachers 10th - 12th Standards
Proving a trig identity might just be easier than proving your own identity at the airport. Learners first investigate a table of values to determine and prove the addition formulas for sine and cosine. They then use this result to...
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Lesson Plan
1
1
Curated OER

Operating on Matrices

For Teachers 9th - 12th Standards
Learners investigate matrices by exploring addition, subtraction and multiplication of matrices.  Students find the determinant and inverse of a matrix.  The lesson includes a set of practice problems
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Lesson Plan
EngageNY

The Structure of Rational Expressions

For Teachers 11th - 12th Standards
Find out when rational expressions are closed. Pupils review adding, subtracting, multiplying, and dividing with rational numbers to make the connections to operations with rational expressions. Using specific examples, learners notice...
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Worksheet
Curated OER

Topic 9.4 - Adding and Subtracting Rational Expressions

For Students 8th - 10th
This worksheet contains a good selection of problems of adding and subtracting rational expressions. There are eight problems. None of the problems have common denominators.  A few are mixed expressions and some require factoring....
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Assessment
1
1
Balanced Assessment

Melons and Melon Juice

For Students 9th - 12th Standards
Model the difference between the graphs of discrete and continuous functions. Scholars examine two scenarios and construct graphs to model the situation. They then compare their graphs that illustrate the subtle difference between these...
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Lesson Plan
Center for Innovation in Mathematics Teaching

Vectors

For Teachers 9th - 12th Standards
Investigate vectors and learn how to use them. Explore why size and direction, as well as knowing speed and distance, are important components of the vector problems you are trying to solve. This is an extensive lesson which includes six...
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Worksheet
Curated OER

Twenty-Eight Addition and Subtraction of Radicals

For Students 10th - Higher Ed
In this radicals instructional activity, students add or subtract radicals in twenty-eight problems.  In most problems, students need to simplify radicals first, in-order to perform the indicated operation.
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Interactive
Curated OER

Solving System of Equations by Addition or Subtraction

For Students 9th - 12th
In this online math worksheet, students solve systems of equations by using addition and subtraction . This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A terrific...
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Lesson Plan
Curated OER

Radicals: Addition & Subtraction of Complex Numbers

For Teachers 10th - 12th Standards
In this radical worksheet, students simplify complex numbers.  They find the sum and difference of complex numbers.  This two-page worksheet contains 11 multiple-choice problems.  Answers are given on the last page.
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Worksheet
Curated OER

Literal Equations

For Students 10th
In this literal equations worksheet, 10th graders solve 10 different problems that include literal equations. First, they determine an equation that has various letters and solve for one of the letters. Students also use various methods...
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Lesson Plan
Curated OER

Addition & Multiplication of Matrices

For Teachers 9th - 12th
Students add and multiply matrices. They explore the dimensions of products of a matrix. After observing problems on the overhead, students solve their own matrix problems. They list and define the properties of matrix multiplication.
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Lesson Plan
EngageNY

A Surprising Boost from Geometry

For Students 10th - 12th Standards
Working with imaginary numbers — this is where it gets complex! After exploring the graph of complex numbers, learners simplify them using addition, subtraction, and multiplication. 
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Lesson Plan
EngageNY

Distance and Complex Numbers 1

For Teachers 11th - 12th Standards
To work through the complexity of coordinate geometry pupils make the connection between the coordinate plane and the complex plane as they plot complex numbers in the 11th part of a series of 32. Making the connection between the two...
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Worksheet
Houghton Mifflin Harcourt

Leveled Problem Solving: Angles

For Students 4th - 6th Standards
This splendid assignment gets future engineers to compute complementary or supplementary angles in real-life applications! Once they have mastered the art of additive angles, they can apply their knowledge to help Steve, Inez, Carlotta,...
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Lesson Plan
Virginia Department of Education

Inductive and Deductive Reasoning

For Teachers 9th - 11th
Introduce pupils to the two types of reasoning, inductive and deductive. Classmates work in pairs or small groups to learn the difference between the two and apply these reasonings to develop valid conclusions. 
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Worksheet
Curated OER

Linear Systems: Graphical Interpretation of Vectors and Linear Systems

For Students Higher Ed
In this interpretation of vectors and linear systems worksheet, students describe the geometric appearance of two vectors. They add the two vectors and sketch the sum as well as the vectors to determine the commutativity of vector...
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Worksheet
Curated OER

Addition and Subtraction of Rational Expressions

For Students 9th - 11th
In this rational expression worksheet, students add and subtract fractional expressions. They completely factor the numerator and denominator. Explanations and examples are provided at the beginning of the document. This two-page...
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Worksheet
Curated OER

Math B Regents Questions by Performance Indicator: Rational Numbers

For Students 9th - 11th
In this rational number learning exercise, students add and subtract quantities containing radical expressions.  They identify equivalent expressions.  This three-page learning exercise contains 15 multiple-choice problems.  Answers are...
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Worksheet
Curated OER

Adding and Subtracting Polynomials

For Students 9th - 12th
In this math worksheet, students utilize addition and subtraction in order to simplify equations which use polynomials. This simple worksheet has 26 problems for the students to solve.
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App
1
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Oddrobo Software

King of Math: Full Game

For Students 3rd - 8th Standards
All hail the king! Young mathematicians put their skills to the test as they strive to become the king of math.
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Assessment
EngageNY

Mid-Module Assessment Task: Pre-Calculus Module 4

For Students 11th - 12th Standards
Challenge scholars to show what they know about properties and addition and subtraction formulas for trigonometric functions. The resource provides a mid-unit check on the progress toward mastery of trigonometric concepts. The areas...
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Lesson Plan
2
2
EngageNY

Mastering Factoring

For Students 10th - 12th Standards
Math class is full of drama—there are so many problems to work out! Pupils work out factoring problems. They use quadratic methods of factoring higher degree polynomials, in addition to factoring the sum and difference of two cubes. 
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Unit Plan
Mathematics Vision Project

Module 7: Modeling with Functions

For Students 9th - 12th Standards
The sky's the limit of what you create when combining functions! The module begins with a review of transformations of parent functions and then moves to combining different function types using addition, subtraction, and multiplication....
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Lesson Plan
EngageNY

Applications of Congruence in Terms of Rigid Motions

For Students 9th - 10th Standards
Corresponding parts, congruent parts, congruent corresponding parts—what does it all mean? The resource challenges pupils to identify corresponding parts for pairs of figures. It uses examples of figures that undergo rigid...

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