Solving Matrix Equations Crack the Code Digital Activity

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Fun With Saxon

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Grade Levels

9th - 12th

Subjects

PreCalculus, Algebra 2

Resource Type

Activities

Standards

CCSSHSN-VM.C.7

CCSSHSN-VM.C.8

CCSSHSN-VM.C.9

CCSSHSN-VM.C.10

CCSSHSN-VM.C.11

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Fun With Saxon

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Description

Students will be able to solve matrix equations by adding, subtracting, or multiplying (using inverses). After finding the matrix, students will need to find the determinant of each 2x2 matrix to drag and drop to its correct cell. They will add up each column and row to get a number and use the numbers to follow directions on how to "crack the code!"

A Google Form is also included for students to check their code. For an interactive Google Slides preview, click here!

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Standards

to see state-specific standards (only available in the US).

CCSSHSN-VM.C.7

Multiply matrices by scalars to produce new matrices, e.g., as when all of the payoffs in a game are doubled.

CCSSHSN-VM.C.8

Add, subtract, and multiply matrices of appropriate dimensions.

CCSSHSN-VM.C.9

Understand that, unlike multiplication of numbers, matrix multiplication for square matrices is not a commutative operation, but still satisfies the associative and distributive properties.

CCSSHSN-VM.C.10

Understand that the zero and identity matrices play a role in matrix addition and multiplication similar to the role of 0 and 1 in the real numbers. The determinant of a square matrix is nonzero if and only if the matrix has a multiplicative inverse.

CCSSHSN-VM.C.11

Multiply a vector (regarded as a matrix with one column) by a matrix of suitable dimensions to produce another vector. Work with matrices as transformations of vectors.

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