Wait, let's start over — teach your class how to return to the beginning. The first lesson looking at inverse matrices introduces the concept of being able to undo a matrix transformation. Learners work with matrices with a determinant of one and set up a system of equations to find the appropriate inverse matrix. 

Concepts

inverse matrices, matrices, matrix operations, multiplication matrices, identity, systems of equations, transformations, rotations, dilation, dilations

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Additional Tags

math

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Instructional Ideas

• Have the class members calculate the determinant of the matrix and its inverse to begin seeing a pattern

Classroom Considerations

• The class should be familiar with the Pythagorean identity for trigonometry
• Class members need to be able to solve systems of equations
• The lesson is the 29th installment in a unit of 32

Pros

• The answer key shows the systems of equations your class must solve
• The teacher notes provide anticipated responses to discussion questions

Cons

• Question one in the problem set asks for a description of a formula that has not be fully developed in the lesson

Common Core

HSN-VM.C.10 HSN-VM.C.12 MP3