Common Core
N-VM.C.12
3 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Linear Algebra · Chapter 3 · Lesson 1
A weighted recipe of the columns.
Linear Algebra · Chapter 5 · Lesson 1
One number that says how much space was stretched.
Linear Algebra · Chapter 5 · Lesson 2
Rules that let you avoid most of the arithmetic.