## Reflection: Developing a Conceptual Understanding Operations with Matrices (2 of 2) - Section 4: Closure

This year my students are very good at bringing up ideas that may help others understand. Today is an example of this process.  After working with multiplication one student says "This may help other students understand. I have made a formula to know how to multiply the matrices. Instead of using numbers, I gave each position a variable name." I put the students' idea on the board. The student then proceeded in writing how he would find each entry. He states that I can now just replace the letters with the numbers and get the answer.

For this student reasoning abstractly helped him reason quantitatively (MP2). Many times I think in the opposite way. I will use numbers to help students understand an abstract problem. It was great to see how the student reversed this process to help with understanding and was willing to share his thoughts with the class.

Developing a Conceptual Understanding: Students developing abstractness

# Operations with Matrices (2 of 2)

Unit 4: Matrices
Lesson 3 of 10

## Big Idea: How can multiplying matrices be used to analyze data?

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3 teachers like this lesson
Standards:
Subject(s):
Math, Precalculus and Calculus, modeling, Matrices, Multiplying matrices
40 minutes

### Katharine Sparks

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