Anyone interested in mathematics education is invited to become part of the OCTM professional community. 

Please click here to go to our online membership form, where you can join or renew* online with a credit card (or, you can fill out the form online and then send a check by regular mail).  You will receive automated e-mails from our membership site following your submission of the form and payment.  Memberships are generally processed within one day.  

  • The cost is $25 for one year or $60 for 3 years. 
  • First-year teachers can join OCTM for one year for only $10. 
  • Full-time student memberships are available for $5 per year. 

*Members may also report changes of address and other membership information online.  Log in here, and then click "Edit your member profile".  


If you are unable to log in to renew or update your information and have already tried the "Forgot password" link at the membership site, 


if you have other questions regarding online memberships and renewals, please e-mail Kim Yoak, OCTM Executive Director, at .    


If you do not wish to use our online form to join or renew, you can download and mail this form with your check: OCTM Membership Form 

OCTM also offers a special membership for P-6 teachers who would like to become a joint member of OCTM and SECO (Science Education Council of Ohio) for a total of $38 per year.

Download the joint membership form:  OCTM/SECO Joint Membership Form 

Questions regarding the paper membership forms should be addressed to the OCTM Membership Secretary:

Sister Mary Theresa Sharp, SND
13000 Auburn Road
Chardon, OH 44024-9330
440-286-7101 v.m. 3132

If you are interested in joining NCTM (the National Council of Teachers of Mathematics), please click on the NCTM logo at the bottom of this page.