Understand zero and identity matrices
Start lessonBegins with Zero identity matrices · Slides
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
- Lesson Plan →Objectives, pacing and practice, built from this lesson's brief.
- Guided Notes →One page your students fill in and keep.
- Exit Ticket →Three items at the end of class. No student accounts.
- Re-teach →After an exit ticket: who missed what, and what to do tomorrow.
- Homework →Assign practice; it grades itself.
HSN.VM.C.10
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What you'll learn
- Identify the zero matrix $O$ and explain its role as the additive identity for matrix addition.
- Construct the identity matrix $I_n$ and verify $AI = IA = A$ for a given square matrix.
- Compute the determinant of a $2 \times 2$ matrix using $\det(A) = ad - bc$.
- State and apply the theorem: a square matrix has a multiplicative inverse if and only if its determinant is nonzero.
- Compute the inverse of an invertible $2 \times 2$ matrix and verify $AA^{-1} = I$.
Slides
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1
Zero identity matrices
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