"When I show those toys and share these surprises with people, often they say 'Oh, it's wonderful, because you take difficult science and simplify it!' That's well meant, of course, but that's exactly what I'm trying not to do. All the things that you're seeing here are surprising for scientists and children alike. All you have to do is look at nature with some imagination and perseverance and you can identify -- sometimes, if you're lucky -- pockets of mystery. These toys come from those pockets of mystery that surprise all of us equally."- Dr. Tadashi Tokieda
You might also enjoy hearing more about the math and physics behind some of Dr. Tokieda's toys. You can learn more about Dr. Tokieda himself in this article from the Harvard Gazette. Dr. Tokieda is the director of studies in mathematics at Trinity Hall, University of Cambridge.
Brady Haran (creator of Numberphile) and Tadashi Tokieda filming in MSRI's library, February 2016
Numberphile: Tadashi's Toys
These videos feature math toys that you can create easily at home using simple materials.
- Strange Spinning Tubes (February 2016)
- Strange Spinning Tubes - Extra Footage (February 2016)
- Perplexing Paperclips (April 2016)
- Subtracting Paperclips (May 2016)
- Catching Kendama (May 2016)
- Borromean Ribbons (May 2016)
- A Strange Change of Rotation (August 2016)
- The Secret of Floppy Paper (August 2016)
- Coffee Cup Vibrations (September 2016)
- The Most Powerful Dice (September 2016)
- Lace Knot Trick (October 2016)
- Balancing a Ruler (January 2017)
Preview: Strange Spinning Tubes
Numberphile: Other videos featuring Dr. TokiedaPlaylist:
You can find more videos where Dr. Tokieda shows off his favorite math puzzles and tricks:
- Unexpected Shapes (Part 1): Tadashi Tokieda cuts various combinations of loops and Mobius loops - with surprising results.
- Unexpected Shapes (Part 2): Dr. Tokieda continues to cut loops and Mobius strips...
- Unexpected Shapes: Extra Footage
- Cute Paper Trick: A little extra trick based on some of the Mobius cutting videos above.
- Freaky Dot Patterns: Learning about Moiré Patterns with Dr. Tokieda.
Videos by Zala FilmsMSRI has also produced an earlier series of videos with Zala Films, featuring more demonstrations and discussion of Tadashi's personal collection of math-based toys.
- What on earth is going on?: An introduction to Dr. Tokieda's reasons to love discovering these math toys and mysteries.
- Columbus's Egg: How can you get an egg to stand up on its own without cheating?
- Two Spinning Turtles: Learn about the math behind spinning toys.
- Seal and the Chiral Beach Ball: How can you position magnets inside toys to achieve this spinning ball trick?
- Cedar Balls: Why do balls inside a bowl spin differently under various conditions?
- Interchanging Loops: Test these tricks that link loops of paper or ribbon together in interesting ways.
- Chain Falling from Cup: Let's take a closer look at how this chain reacts to being spilled from inside of a cup.