Take students beyond the decorations and ask them to identify what a holiday reveals about a culture's values. Then, push them further as they develop their own holidays.
Three quick thoughts on classroom activities for Martin Luther King, Jr's upcoming holiday.
Looking at calendars throughout history is an interesting way to explore multiple perspectives. Nothing is as ingrained in our lives as seven day weeks, twelve months, and 365 days per year. Challenge your students' perceptions by investigating various solar, lunar, and lunisolar calendars.