If for some reason, you haven’t looked at @trianglemancsd ‘s Which One Doesn’t Belong shapes book, check it out here. It is a great gateway into math talk, vocabulary, critical thinking- all those things we cherish in our classroom. Of course, my mind is always thinking of how I will take this gem back to my classroom and use it. This book can truly be used by any grade level, conversations can be that rich- although the time that is needed for each one should decrease. My first reaction was, “Why aren’t there also 3D shapes?” I asked Christopher if he had any plans on incorporating these and he didn’t at the moment. Kids live in an environment where 3D is the norm, and I think these same discussions (as well as new ones) can happen with the “more complicated” shapes.

Which one doesn’t belong?

Of course, now I will be working to assemble pages of these types of problems together! Thanks @triannglemancsd!

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Great idea on including the solid figures in WODB! I particularly like this set, because cylinders can be so “controversial” (or so I like to put it in class). Awesome job! Check out my post on WODB here, I would love your feedback!: http://noraagreene.com/2015/04/06/you-down-with-wodb-yeah-you-know-me/

Thank you! Not ashamed to say my “Fan Girl” turns on for @Trianaglemancsd and his wisely winsome mathematical eye. Your 3-D WODB will be used to kick off my upcoming lesson set on Volume. I also foresee returning to it as my fifth graders contemplate how/why things change when moving from calculating V for cubes and rectangular prisms to that of finding V for pyramids and cylinders.

Thanks

I think it is the cone cuz it has no sides and yeah.