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  • Blog Post: Resources for Teaching Binary Numbers

    I’ve been collecting resources for teaching Binary numbers and number systems lately. Today seemed like a good time to share what I have collected so far. And of course to ask people if they have others they recommend. MathmaniaCS Lesson Plan A lesson plan/activity for teaching Binary...
  • Blog Post: Interesting Links 15 February 2010

    I’m running late today I am afraid. Got home late from the west coast last night and my body is a little confused about what time it really is. Make me think of the old song that asks “does anyone really know what time it is?” Any way it was all worth it as I had a great time at TCEA in Texas before...
  • Blog Post: Math, English, Binary, Computer Science, What a Mix

    Some years ago a first year teacher (Name withheld to protect all involved) was trying very hard to teach Binary numbers for a group of sixth graders. It was not going well. Not at all. At the end of class, on the way out one student turned to the teacher and said “This stuff is math. Why are we doing...
  • Blog Post: Useful Links Twittered June 1 2009

    I’m finding that posting these lists of links has become pretty useful to me. I find myself happy that I have an easy place to search for some of these things. Microsoft announced a new search engine web site called Bing . Channel 9 has a demo of Bing . Interested in getting certified? Get Microsoft...
  • Blog Post: Hiding Files in Plain Sight

    Earlier in the week Vicki Davis posted a list of interesting sites on her blog that included one titled “ How to hide files in JPEG pictures .” It’s an interesting little scheme that basically involved hiding one file (a compressed ZIP or RAR file) at the end of a JPEG file. This is not encryption by...
  • Blog Post: Interesting Links Twittered and Otherwise May 11th 2009

    I’ve decided I really like to do weekly wrap ups of interesting links. Initially it started as a way of sharing with people who don’t follow me on Twitter as well as to give some additional “link love” to some sites I really appreciate. Now it also helps me stay organized and since there is no 140 character...
  • Blog Post: Exploring Binary

    The latest blog to be added to my RSS reader (I use RSS Bandit) is the aptly named Exploring Binary . Some interesting posts there already. For example Ten Ways to Check if an Integer Is a Power Of Two in C What Powers of Two Look Like Inside a Computer A Twelve Cent Binary Calendar I think there is...
  • Blog Post: Friday Links 101008

    I have a small backlog of interesting links so I decided to group some of them in this post. Some are different from what I usually post and some are more typical. But I think they are all interesting to someone who is likely to be reading this blog. I hope so anyway. I don’t usually link directly to...
  • Blog Post: Binary Number Game

    I love binary numbers. I was first taught about different number systems in grade school and was fascinated with them immediately. I used to convert decimal numbers into different base numbers just for the fun of it. So I guess it is not surprising that I love computer projects that involve binary, hex...
  • Blog Post: Binary, Hex, Octal - Does Anyone Care Anymore?

    As the old joke goes there are 10 types of people in the world. Those who understand Binary and those who don't. There seem to be fewer of those Binary understanding people in the world today. Or do I just ravel in the wrong circles? Does computer science really require a knowledge of different number...
  • Blog Post: Thinking About Numbers - Decimal, Binary and Roman

    One of the things I found to be a little bit scary was how limited the understanding so many high school students had about the nature of numbers. Oh sure they understood the difference between real number and integers and they had a sense of the scale of numbers (what's large? What's small?) but they...
  • Blog Post: Telling Time in Binary

    My wife got me a binary clock for Christmas. It has a number of settings. It can tell time in 12-hour or 24-hour time and it can tell it in binary coded decimal or true binary. Now I admit that I'm not as up on binary as I should be. The days when I had to program in binary are long gone and even back...
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