Archive for December, 2007

Sneak peek: People’s Math Directory

Saturday, December 29th, 2007

As the regulars here know my passion is all about making Math fun and accessible to as many people as possible. If you're new you can read more about me in my about page. I'm also learning about Internet entrepreneurship as my plan is to have my Internet ventures produce ...

Carnival of Mathematics #23 posted

Saturday, December 29th, 2007

Brent has posted Carnival of Mathematics #23: Haiku Edition at The Math Less Traveled. This edition has 17 posts and Brent wrote a 17-syllable Haiku poem apropos to each post. Wow! Check the Carnival of Mathematics page from time to time to see who's hosting next or see the end of ...

Some of us have been “blogged”

Thursday, December 27th, 2007

Blogged.com just added a Math Blog Directory. I never heard of blogged.com before. Anyway, there are 26 Math blogs listed as of this writing although not every single one is a Math blog. There are even some Math blogs I hadn't heard of that I'm going to check out. Will it make ...

Fractions and their decimal expansions: An exploration

Thursday, December 27th, 2007

I've been thinking about expanding fractions into decimals recently because I want to do some videos that demonstrate mental Math techniques other than multiplication. I've been reading about the Vedic approaches to division and will cover some of those in future posts or videos. Related to Vedic division and to decimal ...

Math bloggers: What was your most popular post in 2007?

Wednesday, December 26th, 2007

I hope everyone had a great Christmas. I'm stealing this great idea from Problogger. Come join a virtual New Year's Eve party right here and reminisce a little about 2007. Leave a comment with this message stating what your most popular post was, using any criteria you desire. It could be the ...

12 days of Christmas: an exploration in counting presents

Monday, December 24th, 2007

A popular winter Math problem is the counting of presents given during the 12 days of Christmas. On the 1st day of Christmas my true love gave to me a partridge in a pear tree. On the 2nd day of Christmas my true love gave to me 2 turtle doves, and ...

Optical illusion: the spinning girl

Sunday, December 23rd, 2007

Here's an optical illusion that's making its way around the net and has now become my very favorite illusion. Look at the animated gif below. What direction is the girl spinning in, clockwise or counterclockwise? Can you make her change directions with your mind? Can you see her spinning either ...

Review: Martin Gardner’s Mathematical Games CD

Friday, December 21st, 2007

I remember riding the subway to high school in the late 1970's. I rode from Manhattan to the Bronx five days a week for four years. When I wasn't chatting with one of the other kids I'd often be reading some "Mathy" thing or working out a Math problem. Yes, ...

My other blog

Wednesday, December 19th, 2007

Those of you who have read my about page know that I spent 25 years in high tech. A couple of months ago I left the company my brother founded, Deep Web Technologies, to dedicate myself to sharing my passion about Math and to learning about Internet entrepreneurship. This journey ...

Free Sudoku resources for kids

Tuesday, December 18th, 2007

There are zillions of Sudoku web-sites geared toward adults. I've gotten interested in finding Sudoku sites for the little ones, in particular my 6 and 8 year old nieces. While Sudoku is not strictly "about Math" it is a great exercise in logic, it engages kids with numbers and patterns, ...