Matrices Lessons Bundle - Algebra 2 Curriculum

This resource includes 5 lessons involving matrices. These are lessons 12-16 in my Systems and Matrices Unit for Algebra 2.

• Lesson 12 - Introduction to Matrices: Notes introduce matrices by incorporating definition, examples, notations and identifying and locating elements of a matrix. This lesson also includes how to add/subtract matrices and how to multiply a matrix by a scalar.

• Lesson 13 - Multiplying Matrices: Notes introduce the matrix product and require students to first identify if a matrix product is defined. If so, the student is required to state its dimensions. Notes work through the process of multiplying matrices, finding the power of square matrices, and include a basic application problem. The assignment includes 16 problems of the same but does not include an application problem.

• Lesson 14 - Determinants and Inverse Matrices: Notes walk through the process of finding the determinant of a both a 2 x 2 and a 3 x 3 matrix. Students are introduced to the identity matrix and can determine if 2 matrices are inverses using matrix multiplication. Steps and process are shown describing how to find the inverse of a 2 x 2 matrix by hand but NOT a 3 x 3 matrix. This lesson does include how to find the inverse of a 3 x 3 matrix, but students will use a calculator to do this.

• Lesson 15 - Solve Systems Using Matrices: These lessons are designed to take 2 days but you could easily condense the lessons to one day!
  • Day 1 - Lesson introduces the matrix equation and encourages students to solve a 2-variable matrix equation by hand. The 3-variable matrix incorporates use of the graphing calculator, and the online tutorial video includes the calculator process.
  • Day 2 - Students will use the calculator to reduce rows of an augmented matrix to solve 2x2 and 3x3 systems of equations (Reduced Row Echelon Form; "rref").

Supplement this unit with these helpful TI-84 Matrices Calculator Guides (another FREEBIE) for students to reference.

TUTORIAL VIDEOS included (no prep to you!) and can be found on my YouTube Channel: mandy’s math world- the video is on the Algebra 2, Unit 3: Systems and Matrices playlist!

Need digital resources to include in your systems unit? Check these out!

Systems of Equations Google Slides Review

Systems of Equations Boom Cards

Systems of Equations Mystery Picture Boom Cards

Systems of Equations and Inequalities Boom Cards

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Terms of Use:

This purchase includes an individual, non-transferable license for one teacher only for personal use in the classroom. Should additional teachers need this resource, you may purchase additional licenses at checkout.