Begin teaching students about calendars with a simple calendar featuring the days of the week. During circle time, talk to students about the activities they take part in during each day of the week, such as music class, reading, physical education or church on Sundays. Give students a blank calendar for the week and help them write the days of the week in each space. Below the day, ask students to draw a picture of themselves taking part in that day's activities.
Use a yearly calendar to introduce students to the months of the year. Use songs to help students memorize the months of the year. During circle time, show students a yearly calendar, but remove the months of the year. Instead, use a picture or clue to help students figure out the month; for example, for December use a Christmas tree or an American flag for July. Write each month on a slip of paper. Ask students to guess the month either from memory or by the clue and place the correct month on the yearly calendar.
At the beginning of each month, talk with students about the holidays that occur during that month, and make a special calendar to count down the days until the special event. For Halloween, cut a large pumpkin shape from orange construction paper. Draw a calendar grid on the pumpkin, and encourage students to write in the numbers inside the grid. Help students make themed calendars to celebrate each holiday, and mark out each day at the end of the school day to count down to the big day.
Use the calendar to teach students about the four seasons: Spring, summer, winter and fall. Show students when each season begins and ends on the calendar, and color-code each month to indicate its season. Talk with students about the weather in each season, from the cold and snow of winter to the hot stormy weather of summer. Ask students about the different clothes they wear to stay comfortable during each season. Encourage students to draw pictures of the different seasons.