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Andrew Stadel @astadel.bsky.social · 1d

Teachers! The newest Grade 6 Estimation 180 Toolkit is coming this Friday 🎉

It’s packed with lessons and a fluency game that help students see and understand integers.
Learn more at estimation180.com/toolkit-grad...
#mtbos #iteachmath

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Andrew Stadel @astadel.bsky.social · 12d

About how many cheesy crackers does it take to learn multiplication in Grade 3? 😀

Next installment of the #Estimation180 Grade 3 Toolkit coming this week. #mtbos #iteachmath You can learn more at estimation180.com/toolkit

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Andrew Stadel @astadel.bsky.social · 14d

Yeah!
Looking forward to seeing you Mike

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Reposted by Andrew Stadel

Mike Wiernicki @mikewiernicki.bsky.social · 14d

mikewiernicki
I'm presenting at CMC-South! Looking forward to learning alongside other math teachers and leaders and sharing the importance of curiosity and creativity in the math classroom! #CMCSouth #whatif #CAMathCouncil

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Andrew Stadel @astadel.bsky.social · 15d

NEW blog post:
Estimation 180 SUCKS at Ratios.
Plus: Why I Love Achieve the Core and Illustrative Mathematics
www.andrewstadel.com/blog/bring-l...

Check it out. #mtbos #iteachmath #estimation180 @illustratemath.bsky.social

Bring Life to Ratios

In this blog post, Andrew Stadel shares a few downsides to Estimation 180, positive of Achieve the Core and Illustrative mathematics and how the Estimation 180 Toolkit can bring life to ratios for Gra...

www.andrewstadel.com

Andrew Stadel @astadel.bsky.social · 19d

Grade 3. It’s about to get cheesy in the Estimation 180 Toolkit with:
• multiplication
• division
• addition
• subtraction
#estimation180 #mtbos #iteachmath

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Andrew Stadel @astadel.bsky.social · 24d

NEW Installment to the
Grade 6 Estimation 180 Toolkit
this Friday.
Packed with RATIOS goodies.
See what's inside here:
estimation180.com/toolkit-grad...

#mtbos #iteachmath #estimation180

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Andrew Stadel @astadel.bsky.social · 29d

About how many red/yellow counters are in each cup?
#estimation180 #mtbos #iteachmath

If I were to dump them out...how many red? how many yellow?

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Andrew Stadel @astadel.bsky.social · Sep 6

Never tell an answer.
Classroom mantra #1 my students learn on Day 1 thanks to @fawnnguyen.substack.com
#mtbos #iteachmath

Here’s how I start the school year.
www.andrewstadel.com/blog/start-t...

How I Start The School Year - Part 1

Andrew Stadel shares how he starts the school year. In Part 1, there are two classroom mantras, 5 activities, and an introduction to the Thinking Classroom. More in Part 2.

www.andrewstadel.com

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Andrew Stadel @astadel.bsky.social · Aug 25

Got a delivery today for the Estimation 180 Toolkit. Pumped to put this task together for Math 6.

You can learn more about the toolkits at estimation180.com/toolkit

Andrew Stadel @astadel.bsky.social · Aug 20

4 MAJOR Updates: my Summer 2025 Recap
New blog post: www.andrewstadel.com/blog/summer2...

I'm thrilled about what's in the works... Estimation 180 Toolkits. #iteachmath #mtbos #estimation180

2025 Summer Recap • 4 Major Updates

In this blog post, Andrew Stadel recaps everything he accomplished during the summer of 2025 and a few things to look forward to at Estimation 180 and andrewstadel.com.

www.andrewstadel.com

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Andrew Stadel @astadel.bsky.social · Aug 20

I LOVE to hear that. Thanks for sharing. I'm preparing a Grade 3 Estimation 180 Toolkit where those will come in handy.

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Andrew Stadel @astadel.bsky.social · Aug 19

3rd grade teachers out there...
This task would tie in with your math standards, right?
3.MD.C.7 #mtbos #iteachmath #estimation180

Curious how likely 3rd grade teachers are to have square inch tiles in their classrooms.

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Andrew Stadel @astadel.bsky.social · Aug 5

NEW Blog and YouTube post:
My DEFINITION of NUMBER SENSE
www.andrewstadel.com/blog/number-...

I hope you find it helpful. There's a FREE poster you can download too. #iteachmath #mtbos

A Concise Definition of Number Sense

In this blog post, Andrew Stadel provides his definition of Number Sense... inspired by math giants Steve Leinwand and Marilyn Burns, his classroom experience and 3 questions he often asks his student...

www.andrewstadel.com

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Andrew Stadel @astadel.bsky.social · Jul 29

New Blog and YouTube post:
5 Math Giants who have Inspired Me.
• there's a 6th (most important) BONUS giant.
www.andrewstadel.com/blog/mathgia...

I hope they inspire you too and I'd love to hear who has inspired you. #iteachmath #mtbos

Math Giants I Recommend You Look Into

Thank you to Math Giants Brad Fulton, Marcy Cook, Steve Leinwand, Marilyn Burns, and Dan Meyer for your resources, inspiration, and work that has benefited so many teachers and students.

www.andrewstadel.com

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Andrew Stadel @astadel.bsky.social · Jul 22

NEW blog post.
I'm forever grateful for Emmanuel who taught me a valuable lesson about number sense.
www.andrewstadel.com/blog/emmanuel
Plus, my 3 favorite number sense exercises to start the year.

Do you have a similar Emmanuel story?
#iteachmath #estimation180 #mtbos

Emmanuel Taught Me

A former students taught me about the importance of starting the year with number sense exercises.

www.andrewstadel.com

Andrew Stadel @astadel.bsky.social · Jul 22

Be lazy ✅

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Andrew Stadel @astadel.bsky.social · Jul 17

This kicked my BUTT! 😂
Stupid Cheeseball container 😡

My AWFUL Attempt at estimating Day 209
www.youtube.com/watch?v=A_fY...

The 5th and final attempt comes out tomorrow. #Estimation180 #iteachmath #mtbos Cc @tracyzager.bsky.social

My AWFUL Attempt at Estimating Day 209 of Estimation 180 • Part 4 of 5

YouTube video by Andrew Stadel

www.youtube.com

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Andrew Stadel @astadel.bsky.social · Jul 15

Excited to give it a try this year. Thanks for the tip!

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Reposted by Andrew Stadel

Annie Forest @annieforest.bsky.social · Jul 15

How do you manage supplies in the classroom?
Here’s my best school supply organizing hacks!

annieforest.substack.com/p/classroom-...

Classroom Supply Hacks

Ideas to keep your new school supplies from disappearing!

annieforest.substack.com

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Andrew Stadel @astadel.bsky.social · Jul 15

Love the calculator hack.
1. Do you have a list of names you could kindly share?
2. How do you store your calcs?

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Andrew Stadel @astadel.bsky.social · Jul 14

The 1st blog post on my new site:

I WISH I HAD BETTER NUMBER SENSE
andrewstadel.com/blog/better-...

Hope you have a good laugh. I did. #iteachmath #mtbos

I Wish I Had Better Number Sense... when I was 5 years old

Andrew shares a snapshot of his number sense skills at 5 years old. Hilarious. Developing number sense is a journey. Estimation 180 is a vehicle for developing number sense.

andrewstadel.com

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Andrew Stadel @astadel.bsky.social · Jul 11

Both.
Usually just once though. 😉 @gfletchy.bsky.social

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Andrew Stadel @astadel.bsky.social · Jul 11

Me too. Thanks Kathy!
Let me know if you'd like me to attempt any others I haven't seen in awhile. I also added a student handout for teachers to use so students can show their thinking.

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Andrew Stadel @astadel.bsky.social · Jul 11

I'm having a blast revisiting Estimation 180 tasks.
My next attempt: Cheeseballs day 207. www.youtube.com/playlist?lis...

If you missed 206...it's there too. #estimation180 #iteachmath #mtbos

My Attempts at Estimation 180 tasks - YouTube

Andrew estimates tasks that he has not seen in years.

www.youtube.com

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