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Image provided by MTC of Northern Colorado — Greeley, Co

Active Math Teachers’ Circle
Formerly active Math Teachers’ Circle
Math Teachers’ Circle coming soon…

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Alabama
- Mobile: Mobile Math Teachers’ Circle

Arizona
- Sierra Vista: CirculoSoAZ – Borderlands Math Teachers’ Circle
- Tsaile: Navajo Nation Math Teachers’ Circle
- Tucson: Tucson Math Teachers’ Circle

California
- Atascadero: North San Luis Obispo County Math Teachers’ Circle
- Hayward/Lafayette: East Bay Math Teachers’ Circle
- Carson: CSU Dominguez Hills Math Teachers’ Circle
- Hollister: San Benito County Math Talks
- Los Angeles: University of Southern California Math Teachers’ Circle
- Monterey: CSU Monterey Bay Math Teachers’ Circle
- Morgan Hill: Morgan Hill Math Teachers’ Circle
- Palo Alto: AIM Math Teachers’ Circle – Stanford
- San Bernardino: Inland Empire Math Teachers’ Circle
- San Diego: San Diego Math Teachers’ Circle
- San Francisco: San Francisco Math Teachers’ Circle
- San Jose: AIM Math Teachers’ Circle – San Jose
- Santa Cruz: Santa Cruz Math Teachers’ Circle
- Stockton: San Joaquin County Math Teachers’ Circle
- Sonoma: Wine Country Math Teachers’ Circle
- Thousand Oaks: Thousand Oaks Math Teachers’ Circle

Colorado
- Colorado Springs: Pikes Peak Math Teachers’ Circle
- Denver/Longmont: Rocky Mountain Math Teachers’ Circle
- Durango: Southwest Colorado Math Teachers’ Circle
- Greeley: Math Teachers’ Circle of Northern Colorado
- Roaring Fork Valley: Roaring Fork Chapter of the Rocky Mountain MTC

Connecticut
- Fairfield: Fairfield County Math Teachers’ Circle
- New Haven: New Haven County Math Teachers’ Circle

Florida
- Boca Raton: Gold Coast Math Teachers’ Circle
- Fort Meyers: Southwest Florida Math Teachers’ Circle

Georgia
- Atlanta: Intown Atlanta Math Teachers’ Circle
- Kennesaw/Atlanta: Metro Atlanta Math Teachers’ Circle
- Morrow

Hawai’i
- Honolulu, O’ahu: Math Teachers’ Circle of Hawai’i (MaTCH)
- Kapolei, O’ahu: West O’ahu Math Teachers’ Circle

Idaho
- Boise: Boise Math Teachers’ Circle
Illinois
- Chicago: Chicago Math Teachers’ Circle
- Edwardsville: Great Rivers Math Teachers’ Circle
- Romeoville: Southwest Chicago Math Teachers’ Circle

Iowa
- Ames: Central Iowa Middle School Math Teachers’ Circle
- Des Moines: Iowa Heartland Math Teachers’ Circle
- Dubuque: Dubuque Math Teachers’ Circle
- Sioux Center: Northwest Iowa Math Teachers’ Circle

Kansas
- Olathe: Heartland Math Teachers’ Circle
- Salina: Central Kansas Math Teachers’ Circle

Kentucky
- Fort Thomas: Northern Kentucky Math Teachers’ Circle
- Murray: West Kentucky Math Teachers’ Circle
- Richmond: Eastern Kentucky Math Teachers’ Circle

Louisiana
- Lafayette: Acadiana Math Teachers’ Circle
- Shreveport: North Louisiana Math Teachers’ Circle
- New Orleans: New Orleans Math Teachers’ Circle

Maine
- Falmouth/Portland: Casco Bay Math Teachers’ Circle

Maryland
- Annapolis: Annapolis Math Teachers’ Circle

Massachusetts
- Cambridge: Boston Math Teachers’ Circle (for middle school teachers)
- Chestnut Hill: Math Teachers’ Circle at Boston College (for high school teachers and pre-service teachers)

Michigan
- Detroit: Wayne County Math Teachers’ Circle
- Marquette: Central Upper Peninsula Math Teachers’ Circle
- Sault Ste. Marie: Eastern Upper Peninsula Math Teachers’ Circle

Minnesota
- Minneapolis/St. Paul: Twin Cities Math Teachers’ Circle
- St. Cloud: Central Minnesota Math Teachers’ Circle
- St. Paul: St. Paul Elementary Math Teachers’ Circle

Mississippi
- Cleveland: Mississippi Delta Math Teachers’ Circle
- Gulfport: South Mississippi Math Teachers’ Circle
- Jackson: Capital City Circle

Montana

Note: For more information about Montana’s statewide network of MTCs, please visit the Montana Math Teachers’ Circle Network or contact Ke Wu, University of Montana, at ke.wu (at) mso . umt . edu.

Billings: Montana Math Teachers’ Circle at Billings
Great Falls: Great Falls Math Teachers’ Circle
Helena: Helena Math Teachers’ Circle
Missoula: Montana Math Teachers’ Circle at Missoula
Polson: Mission Valley Math Teachers’ Circle

Nebraska

Note: For more information about Nebraska’s statewide network of MTCs, please visit the Greater Nebraska Math Teachers Circle or contact Michelle Homp, University of Nebraska-Lincoln, mhomp3 (at) math . unl . edu.

Beatrice
Bellevue
Columbus
Falls City
Fremont
Grand Island
Hastings
Holdrege
Kearney: Central Nebraska Math Teachers’ Circle
Lincoln: Lincoln Area Math Teachers’ Circle
Milford
Norfolk
North Platte
Omaha: Omaha Area Math Teachers’ Circle
Seward
Scottsbluff
Superior
Wayne: Northeast Nebraska Math Teachers Circle

New Hampshire
- Plymouth: New Hampshire Math Teachers’ Circle

New Jersey
- New Brunswick: Rutgers Math Teachers’ Circle
- Toms River: Rutgers Math Teachers’ Circle at Toms River

New Mexico
- Albuquerque: Albuquerque Math Teachers’ Circle
- Española: Math Teachers’ Circle of Northern New Mexico
- Santa Fe: Math Teachers’ Circle of Santa Fe

New York
- Buffalo Math Teachers’ Circle
- Annandale-on-Hudson (Bard College): Mid-Hudson Math Teachers’ Circle
- Brooklyn: Math Teachers’ Circle @ CityTech
- Ithaca: Ithaca Math Teachers’ Circle
- New York City: New York Math Circle
- New York City: NYC Community of Adult Math Instructors
- New York City: Roundtable: the MoMath Math Teachers’ Circle
- Rochester: Rochester Area Math Teachers’ Circle
- Stony Brook: Math Teachers’ Circle @Stony Brook

North Carolina

Note: For more information about North Carolina’s statewide network of MTCs, please visit the North Carolina Network of Math Teachers’ Circles, or contact Nathan Borchelt, Western Carolina University, at naborchelt (at) email . wcu . edu or Sloan Despeaux, Western Carolina University, at despeaux (at) email . wcu . edu.

Asheville: Blue Ridge Math Teachers’ Circle
Chapel Hill: Triangle Math Teachers’ Circle
Charlotte: Charlotte Math Teachers’ Circle
Cullowhee: Smoky Mountain Math Teachers’ Circle
Salisbury: Central North Carolina Math Teachers’ Circle
Wilmington: Wilmington Math Teachers’ Circle
Winston-Salem: Winston-Salem Math Teachers’ Circle

North Dakota
- Fargo: Math Teachers’ Circle of North Dakota

Ohio

Note: For more information about Ohio’s statewide network of MTCs, please contact Bob Klein, Ohio University, kleinr (at) ohio . edu.

Akron: Rubber City Math Teachers’ Circle
Athens: South East Ohio Math Teachers’ Circle
Bowling Green: Black Swamp Math Teachers’ Circle
Cincinnati: Cincy Math Circle
Cleveland: Crooked River Math Teachers’ Circle
Columbus: Columbus Math Circle
Toledo: Glass City Math Teachers’ Circle
Youngstown-Warren: Mahoning Valley Math Teachers Circle

Oklahoma
- Oklahoma City: Oklahoma City Math Teachers’ Circle
- Tulsa: Tulsa Math Teachers’ Circle

Oregon

Note: For more information about Oregon’s developing statewide network of MTCs, please contact Marla Baber, Vice President, Oregon Council of Teachers of Mathematics, mathdivamarla (at) gmail . com, and Dev Sinha, University of Oregon, dps (at) uoregon . edu.

Eugene: Lane Ignite Math Teachers’ Circle
Portland: Portland Math Teachers’ Circle

Pennsylvania
- Huntingdon: Math Teachers at the Center of PA
- Philadelphia: Philadelphia Area Math Teachers’ Circle
- Villanova: West Philadelphia Area Math Teachers’ Circle

South Carolina
- Columbia: South Carolina High Energy Math Teachers’ Circle
- Conway: Coastal Carolina Math Teachers’ Circle

South Dakota
- Sioux Falls: Sioux Falls Area Math Teachers’ Circle

Tennessee
- Nashville: Middle Tennessee Math Teachers’ Circle

Texas
- Austin: Mathematics Teachers’ Circle of Austin
- College Station: Brazos Valley Math Teachers’ Circle
- Corpus Christi
- El Paso: El Paso Math Teachers’ Circle
- Nacogdoches: East Texas Math Teachers’ Circle
- Seguin: South Central Texas Math Teachers’ Circle

Utah
- Salt Lake City: Utah Teachers’ Math Circle

Virginia
- Emory
- Petersburg: Central Virginia Math Teachers’ Circle
- Reston: Northern Virginia Math Teachers’ Circle
- Richmond: Greater Richmond Math Teachers’ Circle
- Hampton: Hampton Roads Math Teachers’ Circle