So I’ve joined the ranks of the 180 day classroom photo-blog (ugh, hate that word) in hopes of keeping up on reflection in this very busy year. And here’s a Google Reader bundle of a whole bunch of 180 blogs … Continue reading
Thank you for the link reddit.
On the first day of class in AP Calculus and Pre-Calculus Honors I’ll give out the following list of puzzlers that they’ll have a limited amount of time to work on. The students will be working in groups on the … Continue reading
From the consumerist: On the first, dated July 13, the nine items added up to $32.93. There was $2.31 in tax. The total should have been $35.24, but next to the “total” line on the receipt, it said $35.25. The next … Continue reading
From Ars: One promising technique is to use programs such as the open-source Passpal to reduce cracking time by identifying patterns exhibited in a statistically significant percentage of intercepted passwords. For example, as noted above, many website users have a … Continue reading
I thought it might be useful to share a list of programming tools that I use in my Intro to Programming class. This is also an update to my earlier programming ideas post from last year. My general rule for … Continue reading
(ht devour.com) A nice look from TEDed at one of the most interesting facts about mathematics.
I really enjoyed Vi Hart’s newest video, but I heard conflicting messages. Vi compliments Sal Khan’s videos because the are done on the fly and you can see his thinking process, but then she scoffs videos that are all about … Continue reading
Fantastic comic by xkcd, as usual. But the most interesting part is the hovertext: Planets are turning out to be so common that to show all the planets in our galaxy, this chart would have to be nested in itself–with … Continue reading
So my skallops arrived and I’ve had some time to play with them. Geometry teacher’s dream. Ok. Will the following setup make a polygon if I keep the same angle and keep adding on? What about 30 degrees? 45, 60, … Continue reading