A combination of 10 Heavenly Stems and 12 Earthly Branches, the year’s symbol creates a sequence of year names that eventually repeat. Students explore the least common multiple of these two cycles without ever hearing the term LCM.

# Tag: patterns

## Beautiful mathematics

## Wind chill

## Are hurricanes getting stronger and more frequent?

## Labor Day 2022

## Hexadecimal coloring

## Gauss and our star of stars

## Memorial Day 2022

Who are we honoring? How did the holiday come about? Isn’t Memorial Day usually on May 30th?

Students learn a little about the history of the holiday, analyze the possibilities and patterns for when it is celebrated and make observations about the incredible numbers of deaths that have been caused by war.