Draw some circles, the vertices, connected by lines, the edges. Make sure there are no loops in the structure. These are your "trees" or "insectoids" for the puzzle. Next: Fill the circles in with consecutive odd numb...
The next time you're eating candy, ask yourself: "What's the best way to stack this?" Then start arranging them to find out. The answer to this question can be found in the shape of the candy.
In this University of...
A circle made of points, shown here with small white balls, appears to roll around the inside edge of a larger circle, but is that what's really happening? File under: Cycloids, hypocycloids, and optical illusions. Th...
Powered by changes in humidity—curling when dry and straightening when wet—this Erodium cicutarium seed (or more specifically, an achene) will bury itself by slowly drilling into the ground. This time lapse video by p...
What if we could make objects transform in the same way a flower unfolds from its bud? This is what designer, Harvard professor, and accidental toy inventor Chuck Hoberman is trying to figure out. His work, ranging fr...
Scientists have discovered a mysterious universal pattern that "connects a bus system in Mexico and chicken eyes to quantum physics and number theory." MentalFloss summarizes the formerly hidden phenomenon, known as u...
Bending a sheet of plywood is made possible when patterns are cut into it. The smaller wood units remain connected while flexing more independently as the piece folds. Laser Artisan demonstrates this hinge-making tech...
Self-taught baker Lauren Ko creates geometric pies and shares them on her popular Instagram account lokokitchen. In this Tasty video, she talks about what inspired her to start baking, how she learns new tricks, and h...
How do you make a hexaflexagon in under a minute from any long scrap of paper without scissors, tape, or glue? 'Mathemusician' Vi Hart is well-known for her love of hexaflexagons, hexagonal flat paper models that can ...
In the late 1800s, paleontologists in Nebraska found huge coils of hardened sand stuck deep in the earth. Local ranchers called them Devil's Corkscrews and scientists called them Daemonelix. It was clear these corkscr...
Search & enjoy 4,000+ smart & super-cool, “not-made-for-kids, but perfect for them” videos in the classroom or together at home, curated by Rion Nakaya with her 8 & 10 year olds. Click play and start a conversation.