Tag Archives: Geometry

Back to the Future: Finding Traces of the Common Core in an 1893 Textbook

I was taken aback when I saw that a theater was showing the Michael J. Fox movie, Back to the Future, in celebration of its 25th anniversary. My first thought was, “Darn, am I that old?” After taking my Gingko Biloba, my memory was successfully jogged … Continue Reading ››

Classifying shapes into a hierarchy is a 5th grade standard? Really?!

As I recently worked on correlating our materials to the newly released Common Core State Standards, I was surprised to find many of the topics we commonly associate with a high school geometry course placed throughout the standards for elementary grades. I was surprised, but not shocked. In fact, I've believed for a long … Continue Reading ››