任務Task
Understand the working principle and functions of a greenhouse. Then, design and make a greenhouse in your school.
確保學生明白温室的運作原理和功能﹕The working principle and functions of a greenhouse:
A greenhouse is a structure built of transparent materials such as glass. It traps heat from the Sun and keeps the air inside the greenhouse warm enough for plants to grow. The transparent roof and walls let sunlight in and prevent the heat from escaping. This makes the inside of the greenhouse warm (Figure 1).
A greenhouse is usually equipped with artificial lighting, carbon dioxide generators and heaters. The light intensity, carbon dioxide concentration and temperature can be adjusted to maximize the rate of photosynthesis, so that the yield (產量) and the quality of the crops can be improved.
A greenhouse also provides a protected environment to reduce the damage of the crops by pests and bad weather.
第一部分—DIY方法Part A—DIY methods
老師會把同學分成三至五人的小組。與組員合作設計和製作一個温室。設計温室時,要注意以下各項︰
- 温室應能讓陽光照射進內。
- 温室應能把熱困住,從而為植物提供一個較温暖的生長環境。
- 温室應能幫助促進植物的生長。
Your teacher will divide the class into groups of 3–5. Collaborate with your group members to design and make a greenhouse. Remember that the greenhouse:
- must be designed to allow sunlight in.
- should provide a warmer environment for plants by trapping heat inside.
- should help maintain a suitable environment for plants to grow.
1.
在以下的空格內繪畫並標註你的設計。扼要地描述製作温室的步驟。
Draw and label your design below. Briefly describe your steps in building the greenhouse.
2.
列出你所設計的温室所需的物料。你可用任何容易取得的物料。
You may choose to use any materials that are easily available. List the materials your group will use.
3.
描述測試温室的方法,以證明温室可以促進植物的生長。
Describe how you will test the effectiveness of your greenhouse.
4.
寫出你設計温室時,所參考的資料來源。
Write the source(s) of any reference you used when designing your greenhouse.
第二部分—觀看虛擬實境(VR)Part B—Watch the VR of a greenhouse
你想看看現實中在温室內使用的設施嗎?你現在可以觀看一個位於香港的温室的虛擬實境(VR),認識温室內各種設施的實際情況,並與自己設計的温室進行比較。
Do you want to know more about the instruments used in a real greenhouse? You can now watch a VR of a greenhouse in Hong Kong! You can know more about the real instruments inside a greenhouse and compare the designs of these instruments with those you have made.
第三部分—使用micro:bitPart C—Modify the greenhouse with micro:bit
I. 利用流動裝置或電腦監察温室內的狀況I. Monitoring the conditions inside the greenhouse with your mobile device or computer
所需物料︰
micro:bit、IoT:bit(Wi-Fi擴展板)、便攜式路由器、温度與濕度感應器
Materials required:
micro:bit, IoT:bit (Wi-Fi expansion board), portable Wi-Fi router, temperature and humidity sensor
温度與濕度感應器
temperature and humidity sensor
在智能電話 / 電腦即時取得數據﹕Get the data instantaneously on your mobile device or computer:
II. 自動灌溉系統II. Auto watering system
所需物料︰
micro:bit、泥土濕度感應器、水泵
Materials required:
micro:bit, soil moisture sensor, water pump
泥土濕度感應器
soil moisture sensor
III. 自動照明系統III. Auto lighting system
所需物料︰
micro:bit、光強度感應器、LED燈帶
Materials required:
micro:bit, light intensity sensor, LED strip
光強度感應器
light intensity sensor
第四部分—評價和改良Part D—Evaluate and redesign
1.
經老師准許後,你和組員便可收集所需物料製作温室。
4.
老師會根據以下評核準則來評核你的表現。
評核準則 |
水平 |
優異 |
良好 |
普通 |
尚可 |
差劣 |
科學知識的應用
例如﹕温室能否為植物提供一個較温暖的生長環境及幫助促進植物的生長?
|
5 | 4 | 3 | 2 | 1 |
解難能力
例如﹕所使用的物料、温室的強度等
|
5 | 4 | 3 | 2 | 1 |
設計的創新性
|
5 | 4 | 3 | 2 | 1 |
科技的應用
例如﹕micro:bit / Arduino / 3D打印
|
5 | 4 | 3 | 2 | 1 |
報告及演示
|
5 | 4 | 3 | 2 | 1 |
整體水平
|
5 | 4 | 3 | 2 | 1 |
1.
After getting your teacher’s approval, you can collect your materials and build the greenhouse.
2.
Present and display your greenhouse to the class.
3.
What modifications can you make to improve your greenhouse?
4.
Your teacher will evaluate the work of your group based on the following grading rubric.
Assessment criteria |
Quality of work |
excellent |
good |
average |
satisfactory |
poor |
Application of science knowledge
e.g. Does it provide a warmer environment for plants to grow?
|
5 | 4 | 3 | 2 | 1 |
Practical skill
e.g. The use of materials, the strength of the greenhouse, etc.
|
5 | 4 | 3 | 2 | 1 |
Innovative design
|
5 | 4 | 3 | 2 | 1 |
Application of technology
e.g. micro:bit / Arduino / 3D printing
|
5 | 4 | 3 | 2 | 1 |
Presentation
|
5 | 4 | 3 | 2 | 1 |
Overall quality of work
|
5 | 4 | 3 | 2 | 1 |
5.
Submit Student’s Worksheets to your teacher after the lesson.