Halloween, or All Hallow's Eve, originated as a pagan celebration preceding the Catholic church's observance of All Saints Day (a holy day honoring canonized saints) on November 1. It is followed by All Souls Day on November 2 which remembers the beloved dead. In Latino cultures, this celebration is called Dia de los Muertos, or Day of the Dead. Here are Day of the Dead Lesson Plans and Printable Activities to Celebrate Dia de los Muertos