Obsessions #anyqs
Some more information can be found here (look in the description of the video). A second spoiler video can be found here.
Author Archives: Dan
Pole to Pole Run
Pat Farmer, an endurance runner, set out to run from the North Pole to the South Pole to raise money for the Red Cross. Utterly awesome. So if he sets off on April 2nd, 2011 and he runs 16 miles … Continue reading
Skallops – Geometry Heaven
Skallops are a construction toy that uses laser (no sharks) cut wood clips to put together playing cards. They are up on kickstarter now and they can make some incredible shapes. I just ordered a set myself.
Paper #wcydwt
Neat video: Note: All photos were printed on recycled paper. Wasn’t that nice of them. So how many photos? Answer found here.
IB Thoughts?
So our school is looking into implementing the International Baccalaureate program at our school in addition (?) to our AP programs. I know little about IB, and I’m interested in your knowledge and opinions on the IB program. Lemme have … Continue reading
Fibonacci and Recursion
To introduce the fibonacci sequence using the recursive series to my Pre-Calc H class (although most of them know it), I came up with something on the fly that worked nicely. To set up the fibonacci sequence, I showed them … Continue reading
Dr. Square
Much like the Collatz conjecture, the Dr. Square Puzzle (from the blog mathforlove) is an intriguing problem. With some playing around, we came up with what I think is an excellent (and solvable) puzzle. He dubbed it the Dr Square puzzle, because it involves … Continue reading
Geogebra Dynamic Conics for PreCalc
For Precalc H, I created a series of dynamic Geogebra files, where the teacher or student uses sliders to control the center and the a (and b) values of the conic. The file calculates and graphs the appropriate conic, foci, … Continue reading
Puzzler : 20,000 Lights
From Car Talk. RAY: This puzzler is from my “ceiling light” series. Imagine, if you will, that you have a long, long corridor that stretches out as far as the eye can see. In that corridor, attached to the ceiling are … Continue reading
Cartalk Puzzler – Stone Temple Farmers
From Cartalk. Stone Temple Farmers RAY: A farmer had a 40-pound stone that he could use to weight 40 pounds of feed, hay, or whatever else he wanted to sell from his farm. He had a balance scale, and he … Continue reading