Andrew Stadel's Blog

In Part 1 of this Problem-Solving series I shared how frequently I am giving students problem-solving tasks in the 2025 school year. If you haven't read/seen the post, then click here and then come ba...

Before the 2025 school year began, I set a goal to give my students more problem-solving tasks. I figured I would start small and go from there, telling myself I will adjust as needed and learn along ...

Integers can be so abstract for students. Yes, number lines and algebra tiles are useful. I use them and will continue to use them. However, I often find myself asking my 8th and 9th grade students th...

In the video below, I look at a Major cluster of Grade 6 Math Standards at Achieve the Core, poke holes in Estimation 180 with its lack of ratio tasks, give Illustrative Mathematics some well-deserved...

In my last blog post, I shared my 3 favorite series of Estimation 180 tasks. The Basketball court tasks have video reveals and I love pausing the video reveal for 3 reasons:

1. It closes the Info Gap
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Back when I was creating the tasks for Estimation 180, my goal was for my students to develop their number sense one day at a time. Therefore, as random as some of the tasks might appear on the site, ...

In the video below, I share how I finish day 1 of the school year. I share my second classroom mantra and the card trick activity I use from Peter Liljehdahl's book Building Thinking Classroom in Math...

In the video below, I share one of my two classroom mantras, 5 activities, and how I greet students on the first day of school in order to begin creating a low-risk and high trust classroom environmen...

4 MAJOR UPDATES from Summer 2025. Here's a recap, but more details are in the video below.

1. Estimation 180 is back up and running. It was down (boo to 503s). NOW it has many teacher resources I thin
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Back in the mid-2010's when my position in math education expanded outside my own classroom as an instructional coach, presenter and trainer, I realized I didn't have a succinct and portable definitio...

Standing on the shoulders of MATH GIANTS...

I will be eternally grateful for many people in the math education sphere. I'm especially grateful for you because you are spending your precious time read...

Back in 2013, a 7th grade student taught me a valuable lesson. I was hired to a new district and school a few days before the school year began. One of the many things I had on my long to-do list was ...