deviating from the mean

sometimes paper and pencil is the best technology for the job, sometimes not.

Primary menu

  • Home
  • About Me

Category Archives: professional development

Why is Cohort21 so Effective?

Posted on September 30, 2018 by Ruth Eichholtz — 4 Comments ↓

  What is it about Cohort21 that makes it such an effective professional development experience? I think there are 2 key elements that drive the outstanding #cohorteffect: Culture, and Andragogy Continue Reading →

Posted in Action Plan, professional development | Tagged adult learning, andragogy, culture | 4 Comments ↓

Conversations in Math Class

Posted on December 6, 2017 by Ruth Eichholtz — 8 Comments ↓

“That was cool. And hard.” “It’s difficult to come up with math questions.” “I realized that I had got it wrong and then I figured out that I understood it Continue Reading →

Posted in Lesson Ideas, Math, professional development | Tagged formative assessment, thinking routines, vocabulary | 8 Comments ↓

Measuring Success

Posted on November 17, 2016 by Ruth Eichholtz — 3 Comments ↓

Outside education, everyone assumes that it must be easy for teachers to measure our students’ learning. Just give them a test, right? As insiders, we know it isn’t this straightforward. Continue Reading →

Posted in Lesson Ideas, Math, professional development | Tagged assessment, inquiry learning, secondary math, student learning | 3 Comments ↓

Do You “See” Math?

Posted on June 2, 2016 by Ruth Eichholtz — 2 Comments ↓

Are you one of those people who can “see” math? Or are you a person who self-identifies as “not a math person”? I’m an optimist. I actually believe that everyone Continue Reading →

Posted in Action Plan, Lesson Ideas, Math, professional development | Tagged inquiry in math, interdisciplinary, spatial reasoning | 2 Comments ↓

This Year’s Journey

Posted on April 20, 2016 by Ruth Eichholtz — 5 Comments ↓

While this year my action plan moved around a few times, it came to rest in my favorite teaching place: helping students find joy and beauty in Mathematics. Here is Continue Reading →

Posted in Action Plan, Math, professional development | Tagged action plan, IBDP, inquiry in math, student-centered learning | 5 Comments ↓

Wondering about Cohort21?

Posted on September 30, 2015 by Ruth Eichholtz — 1 Comment ↓

… did you recently sign up to be part of this year’s Cohort21 group? Are you considering registering, but not sure whether the PD will be worth the time? I Continue Reading →

Posted in professional development | 1 Comment ↓

Announcing: GirlTech!

Posted on November 10, 2014 by Ruth Eichholtz — 9 Comments ↓

hello world: meet GirlTech. What is GirlTech? Before I tell you that, I have to tell you where it comes from. (tl;dr – an awesome new club for HS girls about coding, leadership, Continue Reading →

Posted in GirlTech, professional development | Tagged coding, gender gap, girls, GirlTech, IT, programming, STEM | 9 Comments ↓

Cool Math Stuff

Posted on May 12, 2014 by Ruth Eichholtz — 1 Comment ↓

I had the great privilege to attend a workshop last week led by the famous-amongst-the-nerds visionary math teacher Dan Meyer. He presented a very accessible framework for bringing more application to Continue Reading →

Posted in Action Plan, Lesson Ideas, Math, professional development | 1 Comment ↓

Subscribe by Email

Want to know when I post something new? Sign up!

Email address

Recent Posts

  • Why is Cohort21 so Effective?
  • Conversations in Math Class
  • Intentional Use of Time in Math Class
  • Measuring Success
  • Do You “See” Math?

Network Posts

Book Review: Between Fixed & Fickle (A.Dahl)

Published 6/3/2026 in Garth Nichols
“Why didn’t people all along see the obvious moral truths—and how could today’s young generation be blind to them anew?” (p.170) As leaders, we are tasked...
Read More »

Book Review: "Unclench Your Fist" (Glenn Robbins)

Published 5/2/2026 in Garth Nichols
“Your strength is not measured by how well you fight back; it’s measured by how much you can endure while continuing to move forward.” ~ p.43 I...
Read More »

The Fractal Relationship Bridge

Published 5/1/2026 in Nya Richards
Analyze. Define. Plot. Evaluate. Outline. These command terms are the words I thought were missing from my lexicon. Leading me this unwavering feeling of displacement...
Read More »

Cohort 21 Final Blog Post: Building Bridges Across Our Campuses

Published 5/1/2026 in Kerrie Robins
Introduction: A Question That Started It All When I began this year with Cohort 21, I carried a question that felt both urgent and something I...
Read More »

Formative Practice as the Foundation for Learning (Reflection)

Published 5/1/2026 in Victor Arhin
How Might We Help Students See Formative Practice as the Foundation for Learning? There's a question that has bothered me throughout my time as a...
Read More »

Recent Comments

  • Lara on Why is Cohort21 so Effective?
  • Justin Medved on Why is Cohort21 so Effective?
  • Nichola Bendle on Why is Cohort21 so Effective?
  • Shelley Thomas on Why is Cohort21 so Effective?
  • Lindsey on Conversations in Math Class

Categories

  • Action Plan
  • GirlTech
  • Lesson Ideas
  • Math
  • professional development
  • Uncategorized

Tags

action plan adult learning andragogy assessment asynchronous learning authenticity clubs coding cohort21 collaboration computer programming culture edtech flexibility formative assessment gender gap girls girls in STEM IBDP innovation inquiry inquiry in math inquiry learning inspiration interdisciplinary lesson ideas literacy math math activities personalized learning programming reflection SAMR secondary math sharing spatial reasoning STEM student-centered learning student feedback student learning subject literacy technology thinking routines tools vocabulary
  • Twitter
Copyright © 2026 deviating from the mean All Rights Reserved.
Theme: Catch Evolution by Catch Themes
Follow

Follow this blog

Get every new post delivered right to your inbox.

Email address