# Lesson Plans for High School Math, Grades 9-12

### Solving Graphic Equations with the Zero Method: Finding Quadratic Equation Roots

If your students are already adept at solving basic quadratic equations by hand, it’s only fair you now teach them a way in which they can solve graphic equations using the graphing calculator’s intersection finder.

### Solving Graphic Equations with the Intersection Method & a Graphing Calculator

This article is of a lesson plan that shows students how to solve systems of equations using the substitution method and the intersection method on the graphing calculator.

### Rectangular Coordinate System Lesson Plan for High School

Let’s share a lesson plan focused on teaching high school students (9th-10th grade) the rectangular coordinate system (e.g., the x,y plane), the distance formula, and the midpoint formula.

### Fun with Geometry and sports!

This is a fun geometry based lesson. The increase in scale during the project helps solidify spatial awareness and measurement estimation. Throughout the project students will learn to use alternative tools to complete their assignments, ie… string in place of a compass.