When you start teaching your unit on Circles, Tangent Lines, and Secant Lines there are a lot of vocabulary words that your students will need to learn. One of the best ways to teach Vocabulary is with a good graphic organizer. We created a graphic organizer for you to use with them. You can […]

# Introduction to Trigonometry

Introduction to Trigonometry – Where to Start! For the best introduction to trigonometry you want to start by WOWING your class. Before you even mention you are starting trigonometry take them through a real world problem. Example Problem to Start With: Pick one student from your class. Preferably one who doesn’t usually pay attention (Let’s […]

# Ratios and Proportions – Bad Teacher!

This is a lesson where you’re going to have to do some corrective teaching. Odds are their previous teacher taught them “cross multiply and divide!” This method of teaching ratios and proportions is no more than a trick! It shows nothing about knowing why the students are doing what they are doing. It is […]

# Two Tips to Teach Volumes of Prisms and Cylinders

I have seen so many math teachers that destroy this lesson because they cannot draw the shapes that they are teaching. One of which was a college professor of mine. As a student this is distracting. Not only are they trying to learn the materials that you are teaching but they are also trying to […]

# Pi Day Top 5 for Geometry Teachers

Pi Day is here! Don’t be that math teacher that doesn’t do a Pi Day lesson. Here are our Top Fives to get you started. Before we go right into it, if you are just looking for a Pi Day Activity to do with your Geometry Class and do not want to look through all […]

# Hybrid Flipped Classroom Model

I get emails daily asking about the Flipped Classroom Model. When I started this company it was to provide Math Teachers with a way to get their free time back so that we wouldn’t have to spend time planning lessons for class. I also wanted to completely eliminate out dated torn up text books from […]

# Valentine’s Day Math Activity – Classifying Quadrilaterals

Here is a fun little Valentines Day Math Activity (Color Match) that actually has something to do with Geometry! (Not just simple non course relevant remedial math.) 😉 This Valentines Day Math Activity is on Classifying Quadrilaterals Download the Valentines Day Activity Now! Valentine’s Day Activity – Classifying Quadrilaterals Have a Great Week! Want access to […]

# Teaching Tessellations to Your Geometry Class

One of our most popular blog post lessons is our lesson on The Tessellation Project. It can be found here: http://geometrycoach.com/tessellation-project/ We have decided to do a follow up that goes into more detail on making this project truly amazing in your Geometry classroom. Where to Start When Teaching Tessellations? The first thing you […]

# How to Teach Perimeter and Area of Similar Figures – in Jay Leno’s Garage

This can be a fun lesson because you can discuss modeling! No, not like runway models. Models like the little cars we used to build as kids or those 3D puzzles of buildings. That old mustang model car you put together as a kid then purchased and re-built the exact real car as an […]

# Christmas Math Worksheets

It’s finally my favorite time of the year! It’s time to teach Trigonometry and it’s Christmas week. Which means you need Christmas Math worksheets and activities. Most of us are teaching Trigonometry Right now. Here is our Geometry Coach Trigonometry Christmas Bundle! These are Christmas Math Worksheets that involve solving Trigonometry related problems then […]

# How to Create a Jeopardy Game

There are tons of ways to review for test, quizzes, or even just the previous days lesson. However, if you want their very best performance Jeopardy is definitely the way to go. How to Create a Jeopardy Game: The Top 3 1. Flippity: http://www.flippity.net/ ++ Flippity has many games you can create. – + You have to […]

# Polygons in the Coordinate Plane – How to use Geogebra

Let me start by saying this. If you haven’t used Geogebra.org in your Geometry classroom you are really missing out on huge amounts of engagement in your classroom. The number one problem in all classrooms across the WORLD is our student’s every shrinking attention span. We as teachers, have to do a better job of […]

# 5 Tips for New Teachers

Finally! You’ve graduated from college and you’ve been given your first position as a math teacher… Now that the stress of the job hunt is over you have an entirely new set of things to stress about. How to manage and teach your Geometry class full of students you’ve never met before. Literally everything about […]

# 8 Teacher Discounts you don’t want to miss this Summer

Before you plan your next vacation be sure to look into some of these crazy discounts for teachers! NEVER leave for vacation without you School ID. It is crazy how many companies have teacher discounts. 1. Hotels – This first one is a a fairly commonly known discount. It doesn’t only apply to Teachers. It applies to […]

# Your Students are Cheating with this Math App

Photomath It can be found here: http://photomath.net/en/ Math App Photomath is a math app that lets students focus the camera of their phone onto any printed math problem. Once focused Photomath shows the student step by step all of the work and answer to the math problem. Best Uses There are good uses for […]

# How to Setup and Use Google Classroom and Google Forms to Teach Geometry

Google has created some really powerful tools that are available to educators. Today we will be learning how to use the following to create a hands on digital learning environment for your Geometry Class. (This course also comes with a certificate of completion for your artifacts or Continuing Education Units) CLICK HERE TO REGISTER NOW! […]

# Special Right Triangles – The Foundation of Everything Trig

Well, it’s that time of the year! As you know your lesson on Special Right Triangles will not only be the foundation for everything trigonometry moving forward but it’s also something that their Algebra 2, Pre-Calculus, and Calculus teachers are heavily relying on you to teach them. Teaching the Unit Circle is hard enough if […]

# How to use Google Forms and Word Clouds to Help your Students Master their Geometry Vocabulary

Teaching your students vocabulary is something that is often overlooked but probably THE MOST IMPORTANT PART OF GEOMETRY! Allow me to explain… The normal routine is… Give the students a list of words for the chapter. Have them look them up in the back of the book. Copy them onto the paper. Use the words […]

# Interactive Geometry Teaching Techniques

A lot of Students hate Math and it is a given that they will hate Geometry as well. They think numbers, shapes and equations are difficult and hard to compute. It is our job to keep them engaged and eager to learn. Use interactive geometry teaching techniques to get through to them. You are […]

# The Magic Octagon – Understand congruence in terms of rigid motions

Before we go into this amazing lesson that will have your students so engaged you won’t be able to get them to stop talking about it the rest of the day, let me show you the standard in which the lesson is based on… Understand congruence in terms of rigid motions CCSS.MATH.CONTENT.HSG.CO.B.6 Use geometric descriptions […]

# Attention Getters to Keep Your Geometry Class Locked in!

Lazy, non-interested students are every teacher’s nightmare. Looking at the droopy eyes of your students while you are pouring everything you have into that lecture is devastating. Fear not! With the right attention getters, techniques, and tips you will not only grab their attention but get them hooked on geometry. You don’t have to be like Robin Williams from the dead poet’s […]

# Teaching Strategies for your Inclusion Geometry Class without an Intervention Specialist

The first thing you have to do is mentally accept the fact that you are going to have to teach two courses in one. It really helps to imagine that your child is the smartest student in your class and also the lowest student in the class. If it was your son or daughter how […]

# How to Teach the Properties of Quadrilaterals

Introducing the concepts of quadrilaterals to kids can be a very challenging task. Different children have different learning capacities, which makes teaching that much more complicated. Some ids may understand the basics of geometry in just a few moments, while other kids may not have a clue of what you are talking about. In this […]

# Inequalities in One Triangle

It’s time to go back to school before the Holidays. Do you have your lesson plans ready? If not here is a Free Lesson to get you through your first day back. If you want all of the content we are having a 12 DAYS OF CHRISTMAS SALE! Just click any of the links throughout […]

# Midsegments of Triangles

Let’s face it about this time of the year we are getting very close to the holidays and suffering from some mid year burnout! No worries! Here are some great materials to help you through your section on Midsegments of Triangles. Included are a Homework Assignments, A video lesson (which is fairly entertaining), and a […]

# Classifying Polygons

Below you will find all of your free materials to help you teach Classifying Polygons. We are giving you these in both editable and PDF formats! Video Lessons (Open Your Lesson with Something Fun Like This!) Here are your FREE materials for this lesson. Just click the links below to download the worksheets. Word Docs & […]

# Triangle Congruence by SSS and SAS

Before you can ever start with proofs your students need to have a clear understanding of what makes sides and angles of triangles congruent. This lesson on Triangle Congruence by SSS and SAS is one of the more memorization based lessons to teach. With that said the only way to memorize something and master is […]

# Pythagorean Theorem – NFL and Geometry

“A Squared plus B Squared equals C Squared” Over and over and over again. We pound it into their young minds until it’s impossible that they forget it. There are two ways to teach this. It can be taught to the test and memorized with no recall as to when to use it only how […]

# The Unit Circle – Hand Trick

This is an Amazing Post I Came Across on Pinterest by a Ms. Smith. Tip & Trick Tuesday: Unit Circle Hand Trick I first learned his nifty little trick to help remember the unit circle last year when I was observing in a classroom at a local high school as part of my degree requirement. […]

# How to make Geometry Interesting

Most students face problems in school especially in Geometry class. Being a teacher, the most important thing for you is to make sure that the concepts are clear enough. We all know that Geometry is not everybody’s cup of tea. Students face a number of difficulties in solving Geometrical problems and hence turn in a below average result. Here are […]

# How to Teach Circles Using the Common Core Standards?

Here is a great video to assist you in starting your lessons on circles. We all know the standards have changed and this one specifically is a head ache due to the algebra 2 that is involved. CCSS.Math.Content.HSG-GPE.A.1 Derive the equation of a circle of given center and radius using the Pythagorean Theorem; complete the square […]

# Full Year of Geometry Lesson Plans

Our Geometry Teachers member area is now open! Get unlimited access to every lesson plan, presentation, worksheet, activity, PowerPoint, video, test, quiz, assessment and resource we have ever published on the site! Click the link below to get started with a Full Year of Geometry Lesson Plans! CLICK HERE TO GET INSTANT ACCESS NOW!! Subscribe […]

# How a Rock Star Geometry Teacher Uses the iPad to Educate

Let’s face it, being a teacher now is nothing like it was 10 years ago. Scratch that, 4 years ago! That was when the seniors now were freshmen. How do things change so quickly? Rather than talk about the things that stress us out as Geometry Teachers with all of the recent standard changes, […]

# Tessellation Project

This is my absolute favorite lesson in Geometry (Right in front of my second favorite lesson Dance Dance Transversal)! We do a week long project where the students create a poster board sized work of art using the Tessellations they create. The best way to do this project is to collaborate with the art teacher […]

# Are you a Geometry Teacher with No Textbooks or Geometry Worksheets?

Does your school use textbooks older than your students? Do they use textbooks at all? I got this email from a GeometryCoach.com email subscriber. I don’t know about you but I’m in a district that has no textbooks and I’m the only person teaching Geometry. As a new teacher to the district (not […]

# Geometry Games – Dance Dance Transversal

While on Pinterest yesterday I ran across some amazing Geometry Games on Parallel Lines and Transversals! Here is my favorite! A game called Dance Dance Transversal! Yes is it a play off the popular video game Dance Dance Revolution. Here is what you’ll need… A roll of tape A Big Empty Room GAME – Dance-Dance-Transversal PowerPoint Presentation Students […]

# 3 Ways to Make Your Life Easier as a Geometry Teacher Without More Geometry Worksheets

Teaching Geometry is one of the most difficult subjects to teach. Not because of the reasons you’d think though. It’s not because most kids are told how hard it is before they ever take it, it’s not because you have to teach kids proofs, it’s not because its different than all of the other math […]

# Parallel Lines and Transversals

When it comes to teaching your students about Parallel Lines and Transversals its all about the visuals! Here are our Top 3 Favorite YouTube videos to assist in teaching this very lengthy lesson. 1.) Start with the Basics Before you can ever go into the details of the types of angles created by parallel lines and […]

# Planning a Proof

Planning a Proof in Geometry is one of the most nerve racking subjects in the course. For the average student who will never be a math major or professor, being able to write a mathematical proof from scratch is not all that important. All of the standardized test only require that the students be able to […]

# Reasoning and Proof

Before your ever start a lesson on Reasoning and Proof you must understand 2 very important things. First, your students will not like proofs. For the most part even your absolute best students will strongly dislike proofs. Secondly, don’t start with proving mathematical concepts! Your students don’t have to dislike proofs if you do a […]

# How to Deal with a Class Clown – Classroom Management Strategies

What is the one thing a class clown wants more than anything else? TO BE THE CENTER OF ATTENTION! What causes a class clown? Two things usually… First They have given up on a subject and have a don’t care mentality. They will do anything to distract anyone from talking about the subject they […]

# Geometry Lessons | The Game Has Changed | Common Core Standards

You all know by now that with the common core standards our geometry books, as out dated as they already were, are now useless. Everything we have done whether it be as a 20 year veteran or a 1st year rookie teacher has to be changed. Is this a bad thing? That remains to be […]

# Points Lines and Planes

This is the lesson that many teachers skip or fly through because they “assume” (in huge air quotes) that the students know what these things are before they get to high school geometry. Unfortunately without a great understanding of points lines and planes it’s almost impossible for them to grasp the tougher stuff. Most […]

# How to Teach Dimensions – Geometry

This is one of my favorite lessons to teach because it is all around us and they know exactly what they are and don’t know it. Let’s start with a One Dimensional Lines. Simple, it’s the distance between two points. Every time we measure the distance between to things we are using one dimension. […]

# Lesson for the First Day of Geometry Class

The absolute most important day of the school year is the first! This is where you have one hour, maybe less, to make a 185 day lasting impression on your students. The younger you are and the fewer amount of years you’ve been teaching the more difficult this is. In college they teach […]