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Archive for April 2015

How to Make Quick Subitizing Images + 3 Free Resources

You are moments away from creating your own quick images.  Watch the video, download the three free resources, and use your new images to promote rich mathematical discourse in your classroom. 1.  Experiencing Subitizing 2.  The Boundary of Subitizing, “The Rewind Version” 3.  How to Make Quick Subitizing Images + 3 Free Resources 4.  Beyond…

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The Boundary of Subitizing (The Rewind Version)

Before I proceed with this series on subitizing, I must raise these questions:  Is there a subitizing boundary?  Is there a number of objects which are simply too many to subitize?  If so, what might that number be?   1.  Experiencing Subitizing 2.  The Boundary of Subitizing, “The Rewind Version” 3.  How to Make Quick…

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Experiencing Subitizing

Experiencing Subitizing is the first in a six-part series on subitizing.  The links to the other posts will become active this week.   1.  Experiencing Subitizing 2.  The Boundary of Subitizing, “The Rewind Version”  3.  How to Make Quick Subitizing Images + 3 Free Resources 4.  Beyond Subitizing 5.  These Dots Will Grow on You…

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Is This Claim Always True?

I have a claim.  It may be true.  It may not be true.   My question:  Is my claim always true?   Watch the video and think about it carefully.  Along the way, remember the power of the pause button, one of the most powerful buttons in education because it provides us with space to…

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The Parking Meter Solution

One week after posting The Parking Meter Question, here is the solution. If you have not yet watched the original video you will want to begin here. Also, the PDF can be downloaded here.  If you use it in class, please send me a photo!     For further instructional ideas and activities, take a…

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