QED Insight (Santo D’Agostino)

Recent Posts
 How does the value of an inverse cosine function change when the unit of its argument changes?
 Why do Airplanes Fly?
 New Online Tutoring Site: QED Infinity
 “Religious Right’s Rejection of Science is Baffling,” by David Suzuki
 The Day Niagara Falls Ran Dry
 “A Lesson in Teaching to the Test, From E.B. White,” by Anne Stone and Jeff Nichols
 “Student Learning Can Only Be Described, Not Measured,” by Rog Lucido
 A Neat Trick For Determining The Integrals Of exp(x) cos x And exp(x) sin x
 “No Student Left Untested,” by Diane Ravitch
 Confusing Use Of Numbers: BestBefore Dates
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Monthly Archives: June 2011
Mathematics Puzzle: Roundtrip On A Treadmill
Alice and Basil are bored while waiting in an airport. They decide to play a game with one of the nearby “moving sidewalks” (treadmills). They decide that Alice will walk on the treadmill at constant speed v (with respect to … Continue reading
Journal of Humanistic Mathematics
The Journal of Humanistic Mathematics, a new onlineonly, peerreviewed mathematics journal, is in its first issue. The Journal of Humanistic Mathematics aims to provide an open forum for both academic and informal discussions on the various threads of mathematical inquiry. … Continue reading
Experience Before Instruction, Examples Before Theorems
I’ve spent a lot of my time in the past few days working around the house, constructing bookshelves (from storebought Ikealike kits), tearing down some interior walls in our basement, and whatnot. I found myself thinking about the physics courses … Continue reading
Posted in Education
Tagged Chris Cooley, math pedagogy, Newton's laws, NFL fantasy file, physics pedagogy
8 Comments
Distraction Displays Of Backyard Robins
I heard on the radio last week that most birds spend a few days out of the nest before they are able to fly. They are particularly vulnerable in this period, obviously,as they can only hop away from predators, and … Continue reading
Posted in Nature
Tagged american robin, bird, bird distraction display, distraction display, fledgling, fledgling bird, north american robin, robin
4 Comments
Puzzle: A Cube Of Resistors, Updated With Links To Solutions
I posted this puzzle a few days ago: Consider 12 identical resistors connected to form a cube. That is, each resistor lies on the edge of a cube, and there is an electrical connection joining three resistors at each of … Continue reading
Posted in Physics problems, Physics puzzles
Tagged cube of resistors, Kirchhoff's laws, resistors, resistors in a cube
1 Comment
Puzzle: A Cube Of Resistors
Here’s a puzzle I just read in Clifford Stoll‘s book High Tech Heretic (paraphrased by me): Consider 12 identical resistors connected to form a cube. That is, each resistor lies on the edge of a cube, and there is an … Continue reading
Mistakes In Education
We adults tend to fear making mistakes. We weren’t like that as children; watch any child learn to walk, or learn to ride a skateboard, shoot baseline jumpers over and over, or do just about anything that requires practice. Children … Continue reading