Text:
Our life contains mathematics everywhere. As long as we observe carefully, we will find that our daily life cannot be separated from mathematics. For example, mom and dad go to the market to buy food and go shopping in the supermarket, all of which involve the calculation of expenses. Mathematics can help us solve many problems in life. It is one of the indispensable life elements in our life, which is closely related to our life and is a good helper for our life and study.
I used to think that mathematics is just an abstract concept in life, which has nothing to do with our life. It's just a course at school. Not exactly. As I grow older, I gradually have the concept of time and numbers. After math class, I often use math to calculate my life. For example, every Saturday I go to the Innovation School in Sanshan Street, and my mother always gives me 20 yuan for lunch.
In order to buy a favorite pendant or school supplies, I often save money from my lunch fee, and I must not overspend every time I make it. My mother always said that we should plan our lives, and I always thought: Why should we plan our lives?
Let me give you an example related to the vital interests of every household: now many families use time-sharing meters to automatically calculate the electricity consumption at different time periods. The standard of time-of-use electricity price is: 0.5583 yuan/kWh in normal time (8: 00 ~ 21:00) and 0.5583 yuan/kWh in low-valley time (2 1: 00 ~ 8: 00 the next day).
From this electricity price standard, the electricity price in the trough period (2 1: 00 ~ 8: 00 the next day) is obviously lower than usual, saving 0 2 yuan per kilowatt hour. If the electricity consumption items such as boiling water and washing clothes are put in the valley hours, 2 kWh can be saved every day, then 20 kWh can be saved in ten days, and 730 kWh can be saved in a year, that is to say, 146 yuan household expenses can be saved, not counting household expenses, and the national electricity bill can also be saved.
Mother likes to use buckets to hold washbasins and bath water for flushing toilets. If this can save 2 kilograms of tap water, it can save 730 kilograms of tap water a year. I don't know if it doesn't count. I was shocked when I calculated it! Mom's careful lifestyle not only achieves low carbon and environmental protection, but also saves family expenses, which really kills two birds with one stone.
There is mathematics everywhere in life. As long as you find and feel mathematics with your heart, the happiness of mathematics will be displayed in front of your eyes!