Need materials to supplement a non common core geometry book? Need support on what the new changes look like and how to implement them? Don't have the time to search the web to gather in all of the materials needed to teach the new curriculum?


Then let me help you. I have created lesson notes to clearly lay out the material and what the objectives actually mean. I have also developed day to day worksheets and activities to cover the material. Go no further - this is where you will find peace of mind and save a lot of time so that you can focus on all the other challenges that teaching brings. For purchasing information, go to support us.



Looking to move forward together as a school and as a department but are not ready to put THOUSANDS of dollars into textbooks that are not really common core?


Many teachers who have purchased the materials return back to ask about purchasing for their schools. This is defintely possible. School licenses are available which allow full use of the materials to copy, edit, reproduce, modify, etc. There is no yearly subscription - it is a one time cost. The materials in their digital form provide schools great flexibility to alter them for different levels of students, length of period, and pacing. For purchasing information, go to support us.



Done your research... unwrapped your standards.... evaluated the textbooks and now you realize that the options are all subpar... well you like literally hundreds of others have found the solution at geometrycommoncore. Here I can provide all of your teachers materials, assessment materials, classroom activities, implementation support and professional development to provide your district a smooth transition into the core. Save 100's of thousands district wide on textbooks!!


Districts of all sizes are searching for what to purchase and provide for their teachers. Textbooks implementation is premature at this stage because no book has yet fully embraced the common core ideals. Yes their titles say COMMON CORE but the pages say NOT COMMON CORE. Changing titles and through objective numbers beside sections is not common core. Common core requires us to do things in a new methodology. That methodology is found in these materials. Already I have had many districts implement these materials after a few teachers had purchased the materials themselves. What better referral than actual teachers who know what is best in the classroom? For purchasing information, go to support us.





It is very humbling to see my materials catch fire as they have.  It is a real testament as to the need for teacher support and materials that match the new curriculum.  I also feel that the materials are classroom ready.  Teachers have been able to download and use them the next day.  Materials designed by a teacher for a teacher – I understand the development of these concepts the materials flow seamless from one concept to the next.  Thank you for your support!!





Isometries & Rigid Motions in the plane preserve distances, angles, betweness and collinearity within transformed shapes. This leads to our new definition of congruence.


Two figures are CONGRUENT if and only if one can be obtained from the other by one or a sequence of rigid motions.


The non-isometric transformation of dilation leads us to investigating similarity. This definition is also revised to be viewed in the light of transformations.


Two plane figures are SIMILAR if and only if one can be obtained from the other by one or a sequence of similarity transformations. (Similarity transformations included reflection, rotation, translation and dilation.)




Welcome to!!

Since September of 2013 these materials have literally entered HUNDREDS OF CLASSROOMS all across America. These plots only represent a few of the locations that have purchased and implemented the materials. Your positive word of mouth is now placing these materials into entire schools and districts.


In a search for common core materials - educators are coming here. Thank you for your support and positive referrals.

-- Mike Patterson


What's New at the

As of May 27, 2014 all of the teaching materials and all of the assessment materials were completed!!! Wow... what an amazing year of professional development for me as I have worked with literally hundreds of teachers to perfect the materials and learn together!!

For purchasing information, go to support us.


What's Upcoming at

The masses have spoken.... my summer projects have been determined..... student notes.... more supplemental sheets for different levels of ability.... videos to support flipping the classroom... and much much more.


Big Announcements

(1) The materials have now entered 44 different states!!!


(2) In the last month 18 districts purchased and implemented the materials for the 2014-2015 year.


(3) I bought and - a hint to some future projects. What am I insane!!!


(4) I was accepted by NCTM to present at the Richmond, VA regional conference in November of 2014. The title of the presentation will be "Transforming the Geometry Curriculum - Literally!!"


(Actually it is just me... not us... but us sounds better - less greedy!!) I am in the classroom just like you (I teach in Las Vegas, Nevada) – We are going through this transition together and I have created this site to help you, my fellow colleagues.  Common Core Curriculum has been thrown on us and very little support has been provided.  It is frustrating to have taught a subject for years and then in one year all of that change (welcome to education - wait a few years and things will change again).  I have been instrumental at both the district and state level in helping our teachers make this transition and then it dawned on me that I could expand that circle of influence to the nation.  I had done something like this about 15 years ago when I created  It gathered hundreds of teachers and students to a common place that was 100% focused on geometry learning and as an aside, it brought national attention to me.  In 2009, I received the two most prestigious awards in education; I was named a Presidential Awardee for Teaching Excellence and a Milken Educator of the Year.  What a year that was….

 I have developed this site and all of its materials on my own time and own money (isn’t that how teachers always do it).  Beyond the many free support materials provided here, I have also included packets of materials that can be purchased to further extend my help in your classroom.  The purchase of these items will help me pay for the URL costs, the web hosting costs, future enhancements, the purchase of software to produce the site, and of course the countless hours that I have put into this site.  Support a friend and enjoy the site!! 


We hope to create the ONE STOP SHOPPING experience for geometry common core here. It has been my experience that very little support has been provided to teachers to make this new and sometimes difficult transition from the geometry that we have taught for years to this new core curriculum. Yes, it is still Euclidean Geometry - so you say "How different can it be?", and my answer is "TOTALLY DIFFERENT!!"


While there are certainly many similar (no pun intended) topics and concepts, the major difference lies in the methodology of delivery and the connectivity of the concepts. For example, transformations use to be that unit that I would try to get to at the end of the year, and now it forms the basis for the two biggest concepts we teach, Congruence and Similarity. In the circles of influence and conversation that I reside, I hear lots of complaints from teachers and I am often asked what I think of this new core curriculum, and my response is that I love it!!! The more I study it, the more I see the deep and well thought out connections. I also enjoy it because of the freshness brought to a subject that I thought I had full control over but now it is like teaching it for the first time. It is probably for this same reason that many teachers are very unhappy - an unwillingness to change. Sorry my friends... get on board and love this subject again!! This is why I have designed this site, to help you make this difficult transition easier - ENJOY THE SITE!!!