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Algebra 2: Matrices Classroom ActivitiesDownload
Areas_of_Polygons

Areas of Polygons

Use determinants of matrices as a tool to find the areas of triangles and quadrilaterals.
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    TI-Nspire™ CX/CX II
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    TI-Nspire™ CX CAS/CX II CAS
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A2_Coded_Messages_sm

Coded Messages

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Determine the product of two matrices and calculate the inverse of the 2 X 2 matrix.
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    TI-Nspire™ CX/CX II
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    TI-Nspire™ CX CAS/CX II CAS
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Matrix_Inverses

Matrix Inverses

Modify a 2 X 2 matrix being multiplied by another 2 X 2 matrix until their product is the identity matrix.
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    TI-Nspire™ CX/CX II
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    TI-Nspire™ CX CAS/CX II CAS
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Matrix Multiplication

Examine matrix multiplication to identify the conditions necessary to be able to multiply two matrices.
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    TI-Nspire™ CX/CX II
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    TI-Nspire™ CX CAS/CX II CAS
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A2_Matrix_Transformations_sm

Matrix Transformations

Grab vertices of a polygon undergoing reflections and rotations in the coordinate plane to determine the transformation’s type.
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    TI-Nspire™ CX/CX II
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    TI-Nspire™ CX CAS/CX II CAS
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SolvingSystemsRowOps1_sm

Solving Systems with Row Operations 1

Use row operations to reduce an augmented matrix to its reduced row-echelon form.
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    TI-Nspire™ CX/CX II
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    TI-Nspire™ CX CAS/CX II CAS
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A2_SolvingSystemsRowOperations2_sm

Solving Systems with Row Operations 2

Use matrices as a tool to solve a system of three equations with three unknowns.
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    TI-Nspire™ CX/CX II
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    TI-Nspire™ CX CAS/CX II CAS
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A2N U4 Determinant_sm

The Determinant of a Matrix

Calculate the determinant of a matrix and evaluate it to calculate the area of a triangle or quadrilateral.
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