Common Core
A-REI.B.4
10 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Algebra 1 · Chapter 8 · Lesson 1
What the graph tells you about the solutions.
Algebra 1 · Chapter 8 · Lesson 3
How many real roots, before solving.
Algebra 2 · Chapter 2 · Lesson 3
The Quadratic Formula and the Discriminant
One formula, and a number that predicts the answer.
Integrated Math 2 · Chapter 2 · Lesson 1
A product is zero only when a factor is.
Integrated Math 2 · Chapter 2 · Lesson 2
A method that always works.
Linear Algebra · Chapter 7 · Lesson 2
The characteristic equation, and where it comes from.
Differential Equations · Chapter 5 · Lesson 2
Guess an exponential and the calculus becomes algebra.
Differential Equations · Chapter 6 · Lesson 2
Friction, and the three ways a system can settle.
Differential Equations · Chapter 7 · Lesson 3
The algebra behind every phase portrait.