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

### Quadratic Equations: Teaching the Zeroes Form and the Vertex Form for 9th Grade

In this math exercise, you’ll find a lesson plan that explains how quadratic equations can be solved using the zeroes form and the vertex form along with tips on a follow-up lecture to help students check their work. The grade level is approximately 9th grade.

### Using SMART Boards in Your Math Lesson Plans

There are many ways to use the interactive tools of a SMART Board to teach math. Let’s review some of the best ways to leverage this technology.

### 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.

### Learning The Primary Trig Ratios: Some Helpful Tips

Most students like using mnemonics to help them remember things. Use this silly little jingle to help your students remember the primary trig ratios.

### 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.

### Geometry Practice: A Fun Activity Using Deductive Reasoning

This is a fun little geometry activity that should help students understand the importance of using deductive reasoning skills - and see why proofs aren’t useless after all.