We are Seattle-based educators and community members who work, volunteer, and contribute to ensure every child has the opportunity to enjoy math. If you’re not sure who to contact, just write and we’ll put you in touch!



Nate Corwin, Program Manager

Favorite number: 16
Favorite pet never owned: Marmaduke
Tea or coffee: Coffee, please

Read Nate’s full bio here.

Lesly Cristino, Development Coordinator

Number of different places lived: 3
Hometown: Houston, TX
Tea or coffee? Tea, for sure.

Read Lesly’s full bio here.

Manuela Crowley, Assistant Director of Early Learning

Favorite number: 17
Hometown: Brooklyn, NY
Favorite pet never owned: Giraffe

Read Manuela’s full bio here.

Juan Manuel Flores, Jr., Program Coordinator

Favorite number: Inifinity
Favorite pet never owned: Tibetan Mastiff
Historical figure to accompany on a deserted island: Malcolm X

Read Juan’s full bio here.

Tarhata Guiamelon, Product Manager

Hometown: Los Angeles, CA. I’m a valley girl (in name only!)
Favorite Number: e (Euler’s number)
Number of Places Lived: 4

Read Tarhata’s full bio here.

Maile Hadley, Programs + Operations Director

Favorite number: 7
Hometown: Tacoma, WA
Ideal Vacation Spot: New Zealand

Read Maile’s full bio here.

Ya’Vonne Hubbard, Early Learning Specialist

Favorite Pet Never Owned: Brontosaurus
Favorite Number: 7
Hometown: Seattle, WA

Read Ya’Vonne’s full bio here.

Julie Marl, Executive Director

Favorite number: 8
Number of different places lived: 9
Historical figure to accompany on a deserted island: Ben Franklin

Read Julie’s full bio here.

Ari Rosen, Donor Stewardship Manager

Favorite Pet Never Owned: Definitely a pet monkey
Tea or Coffee: Coffee, coffee, coffee!
Hometown: Houston, TX

Read Ari’s full bio here.

Katie Sauter, Early Learning Program Manager

Hometown: Troy, Michigan
Favorite Number: 17
Favorite Pet Never Owned: Horse

Read Katie’s full bio here.

Kate Sedney-Read, Grants + Communications  Manager

Favorite number: 8
Hometown: Seattle, WA
Historical figure to accompany on a deserted island: Howard Zinn

Read Kate’s full bio here.

Jermell Witherspoon, Early Learning Specialist

Favorite number: 7
Hometown: Seattle, WA
Favorite Pet Never Owned: Dog

Read Jermell’s full bio here.

Board of Directors

Stephanie Cherrington, Directorstephanie

Favorite number: 7
Hometown: Woodinville, WA
Historical figure to accompany on a deserted island: Amelia Earhart

Read Stephanie’s full bio here.

Kate Donnelly, Secretarykate

Hometown: Greenwich, CT
Favorite number: 54
Ideal vacation spot: A place where I warm my feet with sand, rather than socks.

Read Kate’s full bio here.

 Eu-wanda Eagans, Directoreu-wanda

Hometown: Seattle, WA
Favorite number: 13
Number of different places lived: 7

Read Eu-wanda’s full bio here.


Bill Ellis, Director

Favorite Number: 612
Hometown: Twin Falls, ID
Number of different places lived: 12

Read Bill’s full bio here.

Ian Farrell, Treasurerian

Favorite number: 25 (in honor of Raghib “Rocket” Ismail)
Hometown: Iowa City, IA
Favorite pet never owned: Miniature Australian Shepherd

Read Ian’s full bio here.

Mike Greene, Director

Favorite Number: 11 (my old football jersey #)
Favorite Pet Never Owned: Orangutan
Hometown: Rockville, MD

Read Mike’s full bio here.

Kevin Hagwell, Directorkevin

Hometown: Longview, WA
Favorite pet never owned: Dino from the Flintstones
Favorite number: The luckiest of numbers

Read Kevin’s full bio here.

Molly Hanlon, Board Chairmolly-hanlon

Favorite Number: 7
Hometown: Boise, ID
Favorite Pet Never Owned: Sea Otter

Read Molly’s full bio here.

Stefan Karisch, Directorstefan

Hometown: Graz, Austria
Favorite number: 19
Favorite pet never owned: Monkey (which my parents wouldn’t even discuss)

Read Stefan’s full bio here.

Liz Sadler, Director

Number of different places lived: 8
Ideal vacation spot: Any Road Trip
Hometown: Spokane, WA

Read Liz’s full bio here.

Megan Scott, Vice Chairmegan

Hometown: Vero Beach, FL
Favorite number: Infinity
Favorite pet never owned: Polar Bear

Read Megan’s full bio here.

Shoko Toyama, Director

Favorite number: 51 – because of Ichiro Suzuki
Favorite pet never owned: Manatee
Hometown: Chiba, Japan

Read Shoko’s full bio here.


Board Fellows:

Zeno is excited to participate in the Board Fellows program through the University of Washington’s Foster School of Business. The Board Fellows Program places MBA and MPA students as non-voting board members of local nonprofit organizations, allowing students to gain valuable board experience and providing new perspectives and energy to local non-profits.

Over the next year, Zeno will have two Board Fellows:

Joe Moroni

Favorite number: 926. My son’s birthday!
Historical figure to accompany on a deserted island:
Ruth Bader Ginsberg
Hometown: Advance, Missouri

Read Joe’s full bio here.

Kelly Regan

Favorite pet never owned: Otter
Ideal vacation spot? Somewhere with lots of adventures
Hometown: Norco, CA

Read Kelly’s full bio here.




Zeno is made possible by individual donors, grant makers, and sponsors like you. We welcome donations to support our work – every amount helps more people become math powered. To contribute, please make a donation today. If you represent a grant-making organization and would like to learn more about our work with kids, families, teachers, schools and community groups, please contact Kate Sedney-Read. If you are an individual or sponsor looking to learn more about Zeno, please contact Ari Rosen. Thank you for your interest!



Our work at Zeno would not be possible with out our amazing volunteers. From math nights to fundraisers and everything in between, we simply would not be able to reach the wide range of teachers, families, and community members currently engaging in our programs without the many individuals who give their time to create math powered moments! If you would like to learn more about volunteering with Zeno, please visit the Volunteer Page.