Exactly how many triangles can you count in this fun triangle puzzle?

Once upon a time, about 13.8 billion years ago, our universe sprang from a quantum speck, ballooning to one million trillion trillion trillion trillion trillion trillion times its initial volume (by ...

Named for Plato, who theorized that the classical elements were made of these regular polyhedrons, three of the Platonic solids are composed of equilateral triangles: the tetrahedron, octahedron, and ...

Design Squad is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and ...

Team Conrad or Team Jeremiah? #Olitz or #Olake? Leyton or Brucas? Stephanie Sengwe is a pop culture enthusiast with over 10 years of experience working as a digital writer, editor and reporter in the ...

What does connect-the-dots have to do with watching a Pixar film? More than you might think. A connect-the-dots page starts with nothing but some labelled points. As each dot is joined to the next, ...