## 170 New Esti-Mysteries

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

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

To date, I’ve created 101 estimation clipboards – and I’m going to create more to share this month.  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 here.…

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## 51 Esti-Mysteries

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

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

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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