Benefits of Stillness

While running Sunday afternoon, I had Ryan Holiday's book Stillness is the Key playing on Audible. With less than a half mile left of my run, Ryan (he reads it himself) begins reading the chapter Limit Your Inputs and begins it with a quote. A wealth of information creates a poverty of attention. -Herbert Simon … Continue reading Benefits of Stillness

Face-Up Card Puzzle Explained

When I taught a 3-week intensive course for 6th-8th graders called The Beauty of Mathematics several years ago, I used many mathematical card tricks. Some of these mathematical card tricks are quite amazing when embellished for an audience. They were quite fun to perform, instruct how to perform, and then to break down and analyze. … Continue reading Face-Up Card Puzzle Explained