100 New Esti-Mysteries

100 Esti Mysteries Featured Pic

This school year I’m creating and sharing 100 new Esti-Mysteries. You can download your copies by using blue download links below. I hope these bring joy and rich math talk to your classroom!   New This Week! Tuesday, April 2, 2024 Kindergarten:  Esti-Mystery 0104  –  “Unrolling the Clues”  Grades 1-2:  Esti-Mystery 1121  –  “Celebrate!” Grades…

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170 New Esti-Mysteries

new Esti Mystery Picture

This school year, I’ll be creating and posting 170 brand new Esti-Mysteries.  I’ll be posting a new one nearly every day for the rest of the school year – just like last year.  The purpose is the same as last year:  Sharing math joy with you all year long! Prepare for math joy and rich…

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The 3-Container Estimation Routine

3 Container Routine

The 3-Container Estimation Routine is a clear and simple routine that invites students to estimate and discuss their ideas.   This school year, I’ll be posting new sets of 3-Container Estimation Routines every Monday.   Watch this video to learn how to use the routine:       Note:  Use the blue download links below…

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New Estimation Clipboards

EC 113

To date, I’ve created over 150 estimation clipboards – and I’m going to create more to share this year.  They are very fun and easy to use – and your student will love them!  They are also a very exciting and powerful way to build number sense.  As I create more, I will post them…

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The 12 Most Popular Math Strategies and Downloads

12 most popular posts blog post image

Over the past 5 years, this blog has seen nearly 3.1 million views.  The most popular strategies from the blog all have one thing in common:  They include downloadable resources and strategies which can be immediately used in the classroom.  They are also free!  I’m sometimes asked these two questions: “Which are the most popular…

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51 Esti-Mysteries

Esti Mystery Feature Pic

51 Brand New Esti-Mysteries!  4 Challenge Levels!  All New Images! If you’ve used the Esti-Mysteries from the original Esti-Mysteries blog post, or the 15 additional Esti-Mysteries that I wrote for 20 Days of Number Sense and Rich Math Talk, you’ll really enjoy this new set!   My goal was to write and post 51 brand new…

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Esti-Mysteries: Estimation Meets Math Mysteries

EM Clue 2

Introducing Esti-Mysteries!  Each image invites students to wonder what number is represented by the image.  As you click through the each Esti-Mystery, clues will appear that will allow the students to use math concepts to narrow the set of possibilities to a small set of numbers.  In the end, the students will need to call…

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The Estimation Clipboard

Bundle 1 Glasses Pic

The Estimation Clipboard is a set of 40 lessons that each include 4 highly similar images.  Each image provides an invitation to estimate.  Then as new images are introduced, the students’ context and intrigue will grow – and so will their excitement. Jennifer Barker recently wrote about her experience with The Estimation Clipboard in her…

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