MEXICO: This pyramid is called “El Castillo” in Chichen Itza (2:19-2:36). It was built hundreds of years ago by the Maya civilization, but the amazing part here is that twice a year, exactly on the Spring and Fall equinoxes, a shadow appears that aligns perfectly with a serpent’s head. How did the Maya figure this out? Aside: The video below is subtitled in Chinese, but narrated in English.
For project ideas, one year Lower School students created almost 400 miniature cubes to literally build “El Castillo”. This year, third graders are using LED lights to create a shadow of the serpent’s tail inside a diorama.