Learning in the calendar-looking at the calendar, I feel that the calendars are torn off one by one, and the days slip through my fingers. Looking at these calendars, I am both sighing and curious. On the title page of the calendar, it says "2009 ugly year". What is an ugly year? I couldn't help being curious, so I went online to look for information. Information tells me that this is called "heavenly stems and earthly branches", and we can calculate the annual expenditure. The ten-day work is: A, B, C, D, E, G, Xin, Ren and Gui. The twelve earthly branches are Zi, Ugliness, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai. My mother also explained it to me in detail, and I nodded. Turning to the next page, beautiful patterns and clear words immediately attracted me. The patterns on each calendar are designed according to the characteristics of the manufacturer, which will also bring different good moods to people who look at the calendar. "1 month 1, Thursday, New Year's Day ..." I muttered in my mouth and thought in my mind. "January 1" is the solar calendar, and "New Year's Day" is the lunar calendar. The solar calendar is a universal date, while the lunar calendar is a method created by China people. It is with this method that the custom of giving out red envelopes in the New Year has come into being, and it has a history of more than 5,000 years! I have to admire the wisdom and wit of our ancestors, which is a treasure of culture! Moreover, this calendar design looks very convenient. Turning over the calendar page by page, I suddenly found that the color of the work date is different from that of the weekend. Working days are darker in color, such as black or dark blue, while weekends and holidays are more pleasant red or green, so everyone will be particularly happy to see red or green days on the calendar. Calendars also have a lot to do with mathematics. If you look closely, you will find that 1, 3, 5, 7, 8, 10, 12 are big months every year, with 3 1 day in each month. Every year, February, April, June and September, 165438+ 10 are miscarriages, and there are 30 days in each month (February is an exception, only 28 days in a normal year and 29 days in a leap year). If today is Sunday, it will still be Sunday after 7 days, so the calculation of the day of the week is related to the remainder of the number of days divided by 7. After a while, I discovered the mathematics in my life. It turns out that in life, mathematics is everywhere! Calendar, helped me open the avenue of stars in mathematics, taught me to observe, not to be a passerby, but to be the master of life!