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• 植树节

plant life cycle

Plants change at different times of their life. They grow and make new plans. When they get old, they die. This is called a life cycle.

1. A new seed needs water, oxygen and warmth to start to grow into a plant.
2. The plant grows bigger and produces leaves
3. Then the plant produces flowers. The flower has male and female parts. The female part of the flower has eggs. The male part of the flower makes pollen.
4. To make new seeds, the pollen from one flower has to get to the eggs of another flower. The plant needs the wind or insects like bees ,to help. This is called pollination.
5. The pollen and the eggs join together and make seeds that grow inside a fruit. Some plants die after this, but other plants grow and make new things for many years.
6. The seeds can't grow if they are too near each other. Animals or the wind take some of the fruit away from the plant. This gives the seeds more space so that they can grow.

What Do Different Plant Parts Do?

Trees have different parts that serve their own special functions.

Crown

The crown consists of the leaves and branches at the top of a tree. It grows like a hat to expose more under sunlight.

Foliage

The leafy part of the tree is called a foliage ,which generates sugar and other energy .

Leaves are made to catch the sunlight as plants need sunlight to make food，the process of plants making food is called photosynthesis.

Plants take carbon dioxide from the air and release oxygen back into the environment.

Twig

The twigs produce the majority of flowers and fruits.

Trunk

They act like the plant's plumbing /ˈplʌmɪŋ/ system管道系统, conducting water and nutrients from the roots and food in the form of glucose from the leaves to other plant parts.Water and minerals from the roots are carried up through the trunk. They can deliver sugar and other energy downward generated by leaves. Deliver water and minerals upward absorbed by water roots.

Roots

Roots can hold the plant in the soil .

Roots soak up water and minerals from the soil.

Roots grow downward to make the tree steadier.

Annual rings

Annual rings can tell us the age of a tree ,as well as what it has experienced during the years It is alive .Every year as the tree grows, new layer of the rings are formed. Guess how old is the tree below?

Each pair of light and dark rings adds up to 1 year of growth for the tree. In the spring, wood grows faster, which leads to the lighter rings .In the winter ,wood grow slower, which leads to the darker rings. If trees are suffered from pests, diseases or severe weathers, the rings look darker. If not, the rings look lighter.

What tools do we need to plant trees?

We need the shovel, bucket, saplings.Hand Fork,Hand Rake,Hand trowel

Watering Can

Used for watering smaller areas and containers

Hand Hoe/Cultivator

This is a short handled dual /ˈdjuːəl/ 双重的 head tool suitable for use on smaller areas

Gardening Gloves

A pair of gardening gloves is a must to keep your hands protected from cuts and abrasions. /əˈbreɪʒən/ An abrasion is an area on a person's body where the skin has been scraped. 擦伤

You had abrasions to your finger .

植树节起源

1）中国植树节的起源

In ancient China, there was a tradition of planting trees in the Qingming Festival. The earliest tree-planting on the roadside was initiated /ɪˈnɪʃɪˌeɪt/ 发起 by a man named wei xiaokuan from shaanxi province more than 1400 years ago.中国古代在清明节时节就有插柳植树的传统，历史上最早在路旁植树是由一位叫韦孝宽的人于1400多年前从陕西首创的。

In1979,China officially designated /ˈdɛzɪɡˌneɪtɪd/ 指定的 March 12 as "Arbor Day". Encourage individuals and teams to plant and care for trees in order to protect the environment.1979年，中国正式将每年的3月12日定为“植树节”。鼓励个人和团队种植和爱护树木，保护环境。

2）国外植树节的起源

In order to protect the forests, make the environment more beautiful and maintain ecological /ˌiːkəˈlɒdʒɪkəl/ 生态的 balance, many countries in the world have set up the Arbor Day in accordance /əˈkɔːdəns/按照 with their real situations.为了保护林业资源，美化环境，保持生态平衡，世界上很多国家都根据本国实际情况设立了植树节。

Compared to the other countries ,the United States of America was the first one to implement the tree-planting activities, which has more than 130 years old.在这些国家中，美国的植树节最早，已有130多年的历史。

动词读作ˈɪmplɪˌmɛnt实施，执行

On April 10, 1872, the first American Arbor Day was initiated by a journalist from Nebrask, and more than millions of trees were planted across the state of Nebraska.1872年4月10日，由内布拉斯加州一新闻记者发起美国第一个植树节。当天，内布拉斯加州全境种树超过100万棵。

3)植树节的时间

In different countries,Planting Trees Days are on different days.在不同国家，植树节在不同的日子。

Like in India,Planting Trees Day is on July 1.In China,Arbor Day is on March 12.Spring is the prime time for planting trees.

例如在印度，植树节在7月1日。在中国，植树节在3月12日。春天是植树的最好时间

Talk about the Arbor Day

Arbor Day is a day to gather and celebrate trees and all that they do for us. It is a day to show gratitude by caring for current trees, planting new ones, and simply getting outside and enjoying the fresh air and beauty that they provide.

1. How to Celebrate Arbor Day

There are many ways to celebrate Arbor Day and to show your appreciation for trees. If you are wondering what to do to properly celebrate the occasion, here are some ways you can commemorate /kəˈmɛməˌreɪt/ 纪念 the holiday.

/əˈkeɪʒən/ An occasion is a time when something happens, or a case of it happening. (某事发生的) 时候; 场景

1. The best way to celebrate Arbor Day is to plant a tree or many trees!
2. Another way to celebrate Arbor Day is to donate money to an organization that plants trees, preserves rain forests, and/or works to save forest lands around the globe.
3. Volunteering in your local community to plant new trees and care for existing ones is a great way to show your appreciation on Arbor Day.
4. Educate Yourself! Read a book on trees and get a forestry /ˈfɒrɪstrɪ/林业学 degree online.
5. Simply speaking ,get outside! Go on a hike. Make a point to take in the beauty of the trees. You could even make a game out of it and try to identify the most trees.

2. The Benefits of Trees

Why is planting trees such an important thing to do? Here are some of the benefits that trees bring to our lives and our communities.

How to Choose the Right Tree to Plant

Choosing a tree based on its recommended zone will give it the best chance of survival, however it does not guarantee /ˌɡærənˈtiː/that the tree will succeed.

There are other factors such as soil type, moisture levels, sun exposure, /ɪkˈspəʊʒə/ drainage, and humidity that can have an effect on the life of the tree.

Be sure to check the specific requirements for your chosen tree and compare that with the environment you are planting it in.

How to Plant a Tree

After choosing the best tree for you, it is time to plant the tree. Here is a quick step-by-step guide to planting your new tree.

1）Dig a large hole where you want the tree to go. Make sure the hole is at least two times as wide as the root ball and deep enough for the root ball to fit so the top is slightly above with the surrounding ground.

2）Carefully position the tree in the hole. Be sure that tree is facing the direction that you want it to and remove any ties结 or burlap /ˈbɜːlæp/ 麻袋 that came attached to the tree root.

3）Fill in the remaining space. Add loose soil and organic matter (optional) to the space leftover. Try not to add too much to one side, forcing the tree to tilt in one direction. You want it to grow straight and tall.

4）Attach the tree to a stake. Stick a stake into the ground and through the root ball. Then attach it loosely to the trunk of the new tree.A stake is a pointed wooden post which is pushed into the ground, for example in order to support a young tree. 桩I don't think our rose saple needs a stake.

5）Water, water, water. Newly planted trees require more than more established /ɪˈstæblɪʃt/ 老牌的 trees. Water the new tree every day for the first few weeks.

Tree Care Tips

If you would like to show appreciation for the trees around you, here are some tips for how to properly care for trees.

1）Cover the base and roots of a tree in three to five inches of mulch/mʌltʃ/ 护根物覆盖. This will help insulate /ˈɪnsjʊˌleɪt/ 隔离 it from extreme temperatures, slow the evaporation of water, and hinder weed growth.

动词读作ˈhɪndə。形容词读作ˈhaɪndə。 If something hinders you, it makes it more difficult for you to do something or make progress. 阻碍

2）Depending on the temperature and environment, a tree should be watered every one to two weeks. More frequent watering is needed for new trees. Mature /məˈtjʊə, -ˈtʃʊə/ trees need a good watering about every month. If there is extreme heat, then water more often.

3）Make sure the tree is getting adequate /ˈædɪkwɪt/ 足够的 water, but do not overdo it either. If the soil is dry and crumbly易碎的, then more water is needed. If the soil is soggy, then that tree is getting too much water, which can block oxygen and eventually kill the roots.

4）Check leaves for signs of drought: wilting, curling, yellowing, or browning.

/wɪlt/ If a plant wilts, it gradually bends downward and becomes weak because it needs more water or is dying. 枯萎

5）Clear any weeds or grass around the base of the tree. Other plants steal valuable resources from the tree.

6）Do not use pesticides or herbicides/ˈhɜːbɪˌsaɪd/ 除草剂 on young trees. This can permanently /ˈpɜːmənənt/ damage the root system.A herbicide is a chemical that is used to destroy plants, especially weeds. 除草剂; 除莠剂

7）Regular pruning is essential. Trim any dead or diseased/dɪˈziːzd/ 患病的 branches that you see on a tree.

8）Keep an eye out for tree pests and diseases.

How to Repot a Plant移盆

P:We have different kinds of plants at home.This one is called Black rose黑法师，one kind of succulent plants多肉植物[ˈsʌkjələnt] ,Now let's repot the plant.

P:Repotting a plant can seem like a difficult task because a lot of things can go wrong - you can damage the plant by removing it incorrectly from its old pot or fail to repot it correctly and therefore cause the plant to die. Knowing how to prepare a new pot, remove the plant from its old pot, and prepare the plant for its new pot can make repotting a plant a lot easier.

Preparing the New Pot

1. Choose a slightly larger pot.
2. Choose a pot with drainage holes. When youre selecting a new pot, make sure it has drainage holes to allow excess water to drain.
3. Clean and disinfect the pot. [ˌdɪsɪnˈfɛkt]消毒
4. Soak the new pot. If you decide to use a terra cotta[ˈtɛrə ˈkɑtə]陶土 pot for repotting, make sure you soak the pot in water for a few hours before you begin the repotting process. Terra cotta is pretty porous[ˈpɔ:rəs]能渗透的, which means it soaks up 吸收water easily. You dont want your pot stealing your plants water.We don't need to soak the pot because we will not use the tera cotta.
5. Cover the drainage holes. Its important to have a pot with drainage holes, but you also want to make sure soil cant escape through them.
6. Put a few inches of soil in the new pot. Youll need a base of soil under the plant so the roots have something to grow into.

Preparing the Plant

1. Water the plant. Your plant will come out of its old pot more easily if the rootball is moist.
2. Remove the plant from its current pot. If the plant wont come out after several tries, you can use a knife to cut around the edge of the soil and try again.
3. Untangle the remaining roots. [ʌnˈtæŋɡəl]解开
4. Prune the rootball. [prun]修剪

Repotting the Plant

1. Place plant in new pot. While looking at the plant from the side, spin the pot and make sure the plant isnt tilted in any one direction.
2. Fill the pot. Put soil into the pot around the rootball. Pat it flat, because it will help you keep the plant steady and even.
3. Water the plant. You might need to add more soil to fill in empty spots once you water the new plant and the soil settles.下沉Its also best to keep the plant out of the sun and high humidity[hjuˈmɪdɪti]湿度 after repotting.
4. Dont fertilize it immediately, either.

• Moldy food

look at the food in each containers.Can you see the tiny mold spores in the air? Although you couldn't see the tiny mold spores in the air ,them has landed on the different foods before we covered them up. So after three days, mold began to appear on the food as the tiny mold spores grow. The mold grows faster on some foods than others. Look at the tangerines! Moisture and warmth help the spores to feed on the juicy tangerines, so the mold grows well. Mold needs moisture to grow. So no mold appears on that dry cake yet. You may find that we get different colored mold on different types of foods.

Do not touch it and wear kitchen gloves when we handle the containers. After this experiment, we need to make sure we throw the moldy food away.

• 打卡+架子鼓

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• 网课

• 围棋

Our bird feeders have worked!