Vanishing Letters
Simon’s way to celebrate Helloween: a little demo about how red marker reflects red LED light and becomes invisible. A nice trick in the dark! We also had so much … Continue reading Vanishing Letters
Category: Geometry Joys
The Puzzle Man is Back!
Guess who was in town in mid-October? The amazing Vladimir Krasnoukhov, a one-of-kind puzzles inventor from Russia! (I know, I should’ve written about this earlier, but I’ve been lagging behind … Continue reading The Puzzle Man is Back!
Mind Mystery
Our visit to Mind Mystery, a place featuring a few famous optical illusions and math puzzles museum in the Dutch province of Limburg was really impressive.
Math puzzles: Is it Possible?
Simon has been fascinated by these possible-impossible puzzles (that he picked up from the MajorPrep channel) for a couple of days. He prepared many paper visuals so that Dad and … Continue reading Math puzzles: Is it Possible?
Doing math and computer science everywhere
One more blog post with impressions from our vacation at the Cote d’Azur in France. Don’t even think of bringing Simon to the beach or the swimming pool without a … Continue reading Doing math and computer science everywhere
Why the Golden Ratio and not -1/the Golden Ratio?
Take any real number and call it x. Then plug it into the equation f(x) = 1 + 1/x and keep doing it many times in a row, plugging the … Continue reading Why the Golden Ratio and not -1/the Golden Ratio?
Triangular, Square, Pentagonal, Hexagonal Numbers
I asked Simon to show me how he’d come up with the formulae:
A Square Triangle?
Simon explains what Gaussian formula is to check a shape’s curvature and shows how to make a triangle with three 90° angles. Or is it a square, since it’s a … Continue reading A Square Triangle?
Geeks out of the box 