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Hands-on activity. The purpose is to help students learn to use variables and to write equations to model a problem situation.
An introduction to solving systems of equations using substitution and elimination. There are both applications based and non applications based problems.
An introduction to solving a 3x3 linear system of equations. Back substitution and triangular form are first introduced, and then a general procedure for solving systems is presented.

This lesson introduces quadratic equations and graphs. Equations of the form $$ax^2 + c = 0$$ are solved via extraction of roots.

The lesson begins with a situation where the height of a pop fly in baseball is modeled using a quadratic equation.

The lesson begins with an exploration of the family of graphs of $$y = ax^2$$, with an emphasis on tracking the changes in the $$y$$-values for differing values of the parameter $$a$$.

This lesson introduces completing the square as a means of expanding the set of quadratic equations that may be solved beyond the extraction of roots and factoring.

Completing the square is applied to the general quadratic to derive the quadratic formula.

This lesson begins with a review of the vertex formula for a quadratic and looks at two quadratics- one a vertical shift of the other- to verify that correct vertex is obtained for any quadrati

The lesson begins with using graphs to solve quadratic inequalities.