emergent math

Lessons, Commentary, Coaching, and all things mathematics.

Emergent Math

Geoff Krall | geoff@emergentmath.com

Professional Development & Coaching

What kind of professional development engagements does Geoff offer? Check out this page for various options to meet your needs for math support.

Problem Based Curriculum Maps

Check out Geoff’s Common Core Problem Based Curriculum Maps (Grades 3-11)!

Algebra Warm Ups for Geometry Teachers

Check out 180 free Algebra warm ups intended to bridge the gap between Algebra 1 and Algebra 2!

Math Blogging

See the latest of Geoff’s musings on math pedagogy and math education research.

Geoff’s Longform Math Education Miniseries

I’ve done a lot of longform blogging. I call them “mini-series” where I do a deep dive into a particular aspect of math instruction.

Necessary Conditions

Geoff’s book about math instruction and accompanying card sets for professional development use.

Feedback from Geoff’s Professional Development

“THANK YOU for helping to make teaching math more relevant and helping me feel at ease because I still suck at math but will always continue to learn all I can so as to reach out to more students to help them love math too!”

— Secondary Teacher, Idaho

“The resources provided were very helpful and easily applicable! There were several opportunities for participation and conversation that were non-threatening and reflective!”

— MS Teacher, Michigan

From the blog

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  • We’re about to get a lot of dubious research on A.I. in education

    We’re about to get a lot of dubious research on A.I. in education

    Education journals are calling for papers on AI, but educators have barely even had access to it. So what kind of research on AI are we going to see in 2024?

  • Experiencing novice-ness through tabletop games

    Experiencing novice-ness through tabletop games

    It’s important as seasoned Math teachers we remember what it’s like to experience new content. Modern tabletop games might be the best way to create those experiences.

  • My semester with Desmos Activity Builder

    My semester with Desmos Activity Builder

    This semester I taught College Algebra and Developmental Math at a community college. Being new to the institution, I mostly hewed to the standards and progressions and textbooks from prior iterations of the course taught by more tenured faculty. However, I did make one significant change: the graphing calculator. While previous iterations of the course…

  • What’s so great about self-checking exercises?

    What’s so great about self-checking exercises?

    My students really appreciated self-checking exercises this semester iin College Algebra. This post offers some benefits and examples of self-checking exercises using Desmos’ Activity Builder feature.

  • ‘Necessary Conditions’ Five Years Later

    ‘Necessary Conditions’ Five Years Later

    Necessary Conditions was published five years ago this Fall. I’m not sure if five years is a long time or a short time, but it’s a natural time frame to reflect on the book (since we evolved to have five fingers instead of, say, four). So I apologize in advance for what is sure to…

  • Reconceptualizing “more math” for pre- and in-service teachers

    Reconceptualizing “more math” for pre- and in-service teachers

    I am rereading Liping Ma’s Knowing and Teaching Elementary Mathematics for a class. It’s an exceptional book; I’d put it on the Mount Rushmore of books about math education (that might be a post for another day). For those who haven’t read it, the book is an exploration of elementary math instruction in the U.S.…

  • No pushback: So I guess education has given up

    In 2019, North Carolina attempted to push through a bill that would force trans individuals to use the bathroom of their sex assigned at birth, rather than their current gender. It was only a few years ago, but there was mass outrage in a way that seems unthinkable today. Most notably, the National Basketball Association…

  • Is the Subway Footlong Pass Worth It?

    This post is for all you Italian BMT heads out there. For the month of April 2023, Subway customers have the option of purchasing a “Subway Footlong Pass” for $15. You then get 50% off all (I think) Subway sandwiches for the month (digital orders only). Please don’t look down on me, but I get…

  • A few reasons to teach, learn, and do math

    A few reasons to teach, learn, and do math

    As you may have heard, adults don’t need or use math. One can be a successful human without being a successful math learner. In fact, most adolescents and young adults will stop taking mathematics as soon as their school no longer requires them to do so. So why do we force adolescents and young adults…

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