Illustrative Mathematics
Illustrative Mathematics: N Cn Complex Distance
In this problem, you will compute some values related to the complex numbers 2 + i and 5 - 3i. Aligns with N-CN.B.6.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Matrix Addition and Scalar Multiplication
Students learn about matrix addition and subtraction, and scalar multiplication. The tutorial consists of class notes, examples, and practice problems. Review exercises and a chapter quiz are included.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Matrix Multiplication
Students learn about matrix multiplication. Topics examined are identity matrices and properties of matrix multiplication. The tutorial consists of class notes, examples, and practice problems. Review exercises and a chapter quiz are...
Math Is Fun
Math Is Fun: The Law of Cosines
Students learn about the law of cosines. The tutorial consists of a definition, examples, and practice problems to check for comprehension.
Math Is Fun
Math Is Fun: The Law of Sines
Students learn about the law of sines. The tutorial consists of a definition, examples, and practice problems to check for comprehension.
Khan Academy
Khan Academy: Cross Sections of 3 D Objects
Practice your knowledge of all possible cross-sections of common 3D objects. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Fundamental Theorem of Algebra
[Free Registration/Login may be required to access all resource tools.] Resources for teaching and applying the Fundamental Theorem of Algebra.
Better Lesson
Better Lesson: Mars Habitat
In this lesson plan, students are asked to examine a model for a space station on Mars that will house six researchers studying the possibility of establishing a colony. Given the dimensions of the station and the minimum amount of space...
Larson Texts
Larson Precalculus: Operations of Complex Numbers in the Complex Plane [Pdf]
A 3-page handout with examples and exercises in adding, subtracting, and multiplying complex numbers in the complex plane, as well as finding complex conjugates.
Other
Algebra Lab: Word Lesson: Vectors Right Triangles Components and Resultants
Solve problems using vectors that involve velocity, speed, direction, and magnitude. Includes examples and practice problems. Click on the buttons under the practice questions to see the solutions.
Larson Texts
Larson Precalculus: Magnitude of a Scalar Multiple [Pdf]
Example and some exercises on how to find the magnitude of a scalar multiple.
University of Minnesota
University of Minnesota: Math Insight: Multiplying Matrices and Vectors
A clear explanation of how to multiply a matrix by a vector and a matrix by a matrix. A follow-up page provides additional examples.
Purple Math
Purplemath: Graphing Linear Equations: T Charts
A nice tutorial on how to graph linear equations. Goes through the process step by step and gives numerous examples.
Oswego City School District
Regents Exam Prep Center: Theorems and Postulates for Geometry
Here is a partial list of theorems, postulates, and properties.
Oswego City School District
Regents Exam Prep Center: Area of a Triangle and Parallelogram Using Trig
How can trigonometry be used to find the area of a triangle or parallelogram? Does the triangle need to be a right triangle, and how accurate can the results possibly be? The answers to these questions are found here along with several...
Oswego City School District
Regents Exam Prep Center: Adding and Subtracting Complex Numbers
This site contains great information on adding and subtracting complex numbers. Several examples are given, along with a brief definition. Includes link to a graphing calculator tutorial.
Oswego City School District
Regents Exam Prep Center: Systems of Linear Inequalities
Solving a system of linear inequalities is shown to be as easy as solving a system of linear equations! An example is explained before students are given several problems to complete on their own. Complete explanations of these are...
Paul Dawkins
Paul's Online Notes: Rational Exponents: Practice Problems
Practice exercise reviews rational exponents including how to simplify or evaluate expressions and write the answer with either positive or no exponents.
Science Struck
Science Struck: Similarity Statement in Geometry With Examples
Models how to write a similarity statement about different types of triangles and quadrilaterals.
Purple Math
Purplemath: Conics: An Overview
Introduces the basics of conics in algebra, including a flow-chart for determining which sort of conic is represented by a given equation.
Purple Math
Purplemath: Basic Trigonometric Ratios: Examples
Demonstrates how to use trig ratios to do simple solving of triangles.
Khan Academy
Khan Academy: Dilations: Scale Factor
Find both the center and the scale factor of a dilation that maps a given figure to another one. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Perform Dilations
Use the interactive transformation tool to perform dilations for four problems. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Similarity and Transformations
Given two polygons, try to map one onto the other using angle-preserving transformations, and determine whether they are similar. Transformations are done in "intuitive mode." Students receive immediate feedback and have the opportunity...