## About Geoff

Geoff Krall is an experienced educator, blogger, author, speaker, professional developer, student, and mathematician. He taught math in Texas for eight years before moving to Colorado to obtain a masters degree. After that, he joined the New Tech Network of schools as a Math Coach, delivering coaching, training, and professional development to teachers across the country. While there he pioneered Problem-Based Learning as the primary mode of instruction at NTN schools, training hundreds of teachers and dozens of colleagues along the way.

Currently, Geoff is a PhD student at University of Wyoming for Math Education. He lives in Fort Collins with his wife, two kids, three cats, and four chickens.

His first book, *Necessary Conditions: Teaching Secondary Math with Academic Safety, Quality Tasks, and Effective Facilitation* was published in 2018 and is currently available from Stenhouse Publishers.

**About the website**

Feel free to poke around the website. You can check out the blog, featured posts, Geoff’s problem based curriculum maps, or check out Geoff’s Professional Development Services page. Below you’ll find a list of Geoff’s publications and presentations.

You can email Geoff or follow him on twitter. Or use the contact page to get in touch.

**Memberships and Professional Responsibilities**

- Associate Editor,
*Colorado Mathematics Teacher*. (2017-Present) - Mathematics Support Coach, Arvada High School
- National Council of Teachers of Mathematics, Member
- TODOS Mathematics for ALL, Member
- Manuscript Reviewer,
*Mathematics Teacher Educator*

**Publications**

Krall, Geoff (2020) “Review of Mathematical Imagining: A Routine for Secondary Classrooms by Christof Weber,” *Colorado Mathematics Teacher*: Vol. 53 : Iss. 1 , Article 4.

Krall, G. (2020). Student Math Portfolios—A How to. *Mathematics Teacher: Learning and Teaching PK-12*, *113*(7), e8–e9. https://doi.org/10.5951/MTLT.2019.0382

Krall, G. (2018). *Necessary Conditions: Teaching Secondary Math with Academic Safety, Quality Tasks, and Effective Facilitation*. Stenhouse Publishers.

Cotton, W. R., Krall, G. M., & Carrió, G. G. (2012). Potential Indirect Effects of Aerosol on Tropical Cyclone Intensity: Convective Fluxes and Cold-Pool Activity. *Tropical Cyclone Research and Review*, *1*(3), 293–306. https://doi.org/10.6057/2012TCRR03.05

https://orcid.org/0000-0003-0636-2873

**Presentations**

NCTM 2021 Atlanta: What does it even mean to ‘express regularity?’: Interpreting, assessing and scaffolding the SMPs

NCSM 2021 Atlanta: Identity-Building Assessment: From a Number to a Showcase of Knowledge

MCTM 2021 Featured Speaker: “A brief history (and imagining) of assessment”

Clark County Schools Secondary Math Conference 2021: The Care Gap: How Math Creates It and How We Can Use Math to Close It (Keynote Speaker)

NCTM Virtual Conference 2020: The Care Gap: How Math Creates It and How We Can Use Math to Close It

Mt. Holyoke Effective Practices Session (Webinar) 2019: Inquiry: Plain and Tall

NCTM Regional Conference – Boston 2019: Fantastic Tasks and Where to Find Them

CCTM Annual Conference 2019: Fantastic Tasks and Where to Find Them

NCTM Regional Conference 2018 – Seattle: Necessary Conditions: Essential Elements for Secondary Math Learning

NCTM Shadowcon 2017: The Art of Mathematical Anthropology

NCTM Annual Conference 2017: The Struggle Is Real: Tasks, Academic Status, and Productive Problem-Solving

NCTM Annual Conference 2016: Fumbling Towards Inquiry: Starting Strong in Problem-Based Learning

Global Math Department 2015: Designing Systems of Teacher Learning around Student Work

NCTM Regional Conference 2015 – Nashville, TN: *Fumbling Towards Inquiry: Starting Strong in Problem-Based Learning*

Northwest Math Conference 2015, Whistler, BC (featured): *Problem-Based Learning Institute*

Northwest Math Conference 2015, Whistler, BC: *Toward Problem-Based Learning: A Quick Look*

New Tech Annual Conference 2015, Chicago, IL: *Fumbling Towards Inquiry: Starting Strong in Problem-Based Learning*

NCTM Annual Conference 2015, Boston, MA: *Adaptation: Developing Open Problems from Closed Curricula*

NCTM Annual Conference 2014, New Orleans: *Setting the Scene: Designing Your Problem-Based Classroom*

Equip Conference 2013, Plymouth, IN: *Designing Mathematical Tasks*

North Carolina New Schools Scaling STEM Conference 2012: *Toward Developing Mathematical Thinkers: Problem-Based Learning*

North Carolina New Schools Scaling STEM Conference 2012: *Getting Students to Struggle (and Engage) With Math*

Hi, Geoff – I have a question from our engineering design teacher. I sent your Retrospectus out to all our faculty and in reading it, she found Nguyen used as an adjective in several places. Can you tell me what it is in reference to? Thanks for your help!

Fawn Nguyen is a prolific teacher and blogger (http://fawnnguyen.com/, twitter: @fawnpnguyen). Her last name is pronounced “win”. So therefore Nguyen = win. When you do something good, that’s a huge “Nguyen”. 🙂

Oh, and you’re not currently a teacher, either, Geoff. Yet I would not rule you out as having useful things to say about technology in classrooms.

Appreciate it Michael.