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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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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For my educator friends who have access to Google Slides, but do not have access to PowerPoint, this post is for you.  Since Google Slides does not have the animation that makes the Splats become transparent, the Splat! reveal does not work in Slides.  Now – with these materials – it will.  I’ve rewritten the…

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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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    Cube Conversations is a set of 80 (eighty!) animated lessons designed to promote visually rich math discourse.  I’ve designed these lessons to invite many voices and vantage points into classroom conversations. Much like Splat!, you control the animation with a few simple clicks  – and each click presents an opportunity for students to…

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“You have unwittingly stumbled into a duplicator lab…” As you watch this brief, animated story about the duplicator lab – which includes 3 riddles – you may find yourself reaching for  a piece of paper, a pencil, and an entirely new kind of strategy. How challenging will it be to solve the riddles from inside…

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Here are 35 brand new Splat! lessons ready to download and use in your classroom. This time the Splats! are nested within each other. If you enjoyed 50 lessons in The Original Splat Series and the 20 lessons in The Fraction Splat Series, you are about to discover a new variation with a fascinating  twist!…

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Fraction Splats! have arrived!   The original Splat! post rocketed up to over 35,000 hits  in less than a month, which included over 19,000 lesson downloads!  All 50 lessons in the Splat! post involved whole numbers.  In this post, I’ve turned my attention to fractions, and have created 20 new lessons for you to download!…

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Welcome to Splat!  You are only moments away from a VERY POWERFUL, highly interactive number sense strategy that can be used at any grade level! This post includes 50 (fifty!) free, downloadable PowerPoint math lessons! Watch the video, download some (or all) of the lessons, and experience what happens when you unleash this resource in…

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3 Powerful Tile Strategies will equip you to provide number sense opportunities to your students that involve composing and decomposing either whole numbers or fractions.  This is a very flexible resource that can be used in any grade, K-12. This post follows up the wildly popular Tiled Area Questions and Primary Tile Questions posts with even…

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Number sense is on display in Primary Tile Questions as students seek a wide variety of ways to add numbers and display their thinking.  You may find the connection between area and the value of the shapes to be intriguing.  You’ll also find 3 PowerPoint lessons which you can download along with 3 PDFs which…

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