Let the campus green 让校园绿起来 Greening has a great impact on the environment and life. Green plants have good filtration and absorption of dust in the air. 绿化对环境和生活的影响很大，绿色植物对空气中的灰尘有良好的过滤和吸收作用。 ●Twenty-five square meters of grass can absorb about one person's daily carbon dioxide exhalation and produce as much oxygen as one person needs in a day. ●25平方米的草地每天大约能吸收一个人一天呼出的二氧化碳，制造出一个人一天需要的氧气。 ● A hectare of forest can absorb about 1,000 kilograms of carbon dioxide and release 700 kilograms of oxygen every day. There's enough oxygen for 800 people to breathe. ●一公顷树林每天大约能吸收1000千克二氧化碳，释放700千克氧气。这些氧气足够800个人呼吸之用。 ● "Shandong Province primary and secondary school campus landscaping management measures" stipulates: the green rate of new schools shall not be less than 35%, green coverage should be more than 50%. ●《山东省中小学校园园林绿化管理办法》中规定：新建学校绿地率不得低于35%，绿化覆盖率应在50%以上。 ● Shandong province primary school standardized school standard squadron greening requirements: green space area of each piece is not less than 50 square meters, student per capital greening land is not less than 0.5 square meters. ●山东省小学规范化学校标准中队绿化方面要求：绿地面积每块不小于50平方米，学生人均绿化用地不少于0.5平方米。 Our school green rate, green coverage rate and student per capital green land are respectively how much? 我们学校的绿地率、绿化覆盖率以及学生人均绿化用地分别是多少呢？ develop a program 制定方案 Before the activity, we need to know what is the greening rate, the greening coverage rate and the greening land per student... 活动前需要先了解什么是绿地率、绿化覆盖率和学生人均绿化用地…… Activities can be taken to learn from the teacher, access to data, measurement, calculation and other methods. 活动中可以采取向老师了解、查阅资料、测量、计算等方法。 To measure and calculate the area of green space, tools such as soft ruler and calculator are needed. 测量和计算绿地的面积，需要用到软尺、计算器等工具。 We are going to work in groups and work together... 我们准备分小组活动，进行分工合作…… Pratical inquiry 实践探究 Let's look it up to find out what green space includes... 我们查资料来了解绿地面积包括哪些…… We measure the green area of the school... 我们测量学校的绿地面积…… We asked our teachers about... 我们向老师了解…… The area covered by greening includes the area of green space and the projected area of single bead vegetation. Projected area refers to the area of the crown that is projected vertically to the bottom of the tree. 绿化覆盖面积包括：绿地面积和单珠植被的投影面积。投影面积指树冠最外周垂直投影到底面的面积。 Let's calculate the greening rate... 我们来计算绿地率…… Greening rate equals to green area over total land area times one hundred percent 绿地率＝绿地面积/用地总面积×100% Green coverage rate equals to green coverage area over total land area times one hundred percent 绿化覆盖率＝绿化覆盖面积/用地总面积×100% Display and exchange 展示交流 Through measurement, we know the school's green area, green cover area and total land area. 通过测量，我们知道了学校的绿地面积、绿化覆盖面积和用地总面积。 We calculate the greening rate and the greening coverage of the school... 我们计算出学校的绿地率和绿化覆盖率…… According to the number of students in our school and the green area, I figured out that the green area per student is..... 根据我们学校的学生人数和绿地面积，我算出学生人均绿地面积是…… Compared with "provincial regulations", I think the green space in our school... 与“省规”比起来，我觉得我们学校的绿地…… I have completed a survey report on the school green space. 我完成了《学校绿地情况调查报告》。 summary and reflection 总结反思 In the process of investigation, measurement and calculation, we used the knowledge of polygon area calculation, percentage and so on. 在调查、测量与计算的过程中，我们用到了多边形面积的计算、百分率等学过的知识。 The rate of green land can be improved by planting trees, planting "green" on the roof and so on. 可以通过栽树、见缝插“绿”、屋顶种植等方式，提高绿地率。
In this activity, I think our team is getting more and more tacit... 在本次活动中，我觉得我们小组配合得越来越默契…… |
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