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Star of David Theorems in Pascal Triangle

admin — Wed, 21 Dec 2011 16:34:20 +0000

I am not sure who coined the term "The Star of David Theorem" to designate the identities discovered in the early 1970s. There are in fact two of them, both related to the "Star of David" configuration in Pascal triangle (The diagram is courtesy wikipedia.org.) The first result discovered by Hoggatt and Hansell in 1971 [...]

Star of David Theorems in Pascal Triangle is a post from: CTK Insights

Let Them Count by My Boys

admin — Wed, 04 May 2011 19:30:35 +0000

This is a small book written by one of my boys and illustrated by the other. The idea is along the lines discussed in my previous post. Any group of objects has an associated attribute that reflects on the size of the group. This attribute is called Number; its presence and uniqueness is what allows [...]

Let Them Count by My Boys is a post from: CTK Insights

Math Teachers at Play - a Blog Carnival, February 2011

admin — Fri, 18 Feb 2011 22:49:46 +0000

The Math Teachers at Play blog carnival had several articles that especially drew my attention. The visual for explaining and using Equivalent Fractions, Sue Downing found at the Wikiversity website is indeed wonderful. It requires hardly an explanation and beautifully applies to explain the division of fractions process: It is a pity the Wikiversity page [...]

Math Teachers at Play - a Blog Carnival, February 2011 is a post from: CTK Insights