To commute or not to commute, that is the question. The 26th segment in a 32-segment lesson plan focuses on the effect of performing one transformation after another one. The pupils develop the procedure in order to multiply two 2 X 2 matrices and whether the operation is commutative or not. The class continues with addition of matrices and the role of the zero matrix.

Concepts

transformations, matrix operations, matrices, multiplication matrices, addition, multiplication, commutative property, commutative property of multiplication

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Additional Tags

math

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Instructional Ideas

• Lead a discussion about what operations are commutative and which ones are not with real numbers
• Provide several opportunities for the class to practice multiplication and addition with matrices

Classroom Considerations

• The class should be familiar with multiplying a 2 X 2 matrix and a 2 X 1 matrix

Pros

• The teacher notes provide suggestions on what instructional practice to use for each section
• The exit ticket captures whether individuals understand all the lesson concepts

Cons

• None

Common Core

HSN-VM.C.8 HSN-VM.C.11 MP3 MP6 MP7