حل درس Photosynthesis لغة إنجليزية الصف التاسع
Lesson 3
Learning obiectives
Reading : To develop learners' ability. to read about how plants help the balance of carbon dioxide and oxygen in the air
Vocabulary
Oxygen
Carbon Dioxide
Respiration
Breathe
Photosynthesis
Energy
Learnin the lesson. learners will be to
• use a text to complete an equation
describe the function of different part of a plant
use scientific language to complete a text about photosynthesis
Learning objectives
Reading
To develop learners' ability to read about how plants help the balance of cartxn dioxide and oxygen in the air
Reading
Read about how plants help the balance of carbon dioxide and oxygen in the air. Use the information to complete the equation
Photosynthesis is how plants make their own food to get energy. This is how they do it
Plants take in carbon dioxide from the air through their leaves. They take up water from the ground through their roots. Energy from sunlight works together with the carbon dioxide and water to The plant uses the sugar for food and the oxygen is released into the air through the leaves
energy fron is released
sugar is prcxiuced
oxygen Of the plant
water + carbon dioxide
Discussion
Why are the following important for plants
I) Leaves
Leaves are important for plants because they take in carbon dioxide and release oxy en through the
Roots
The plant needs roots to take up water from the ground. Reading: To develop
3) Sunlight
Sunlight is needed for photosynthesis to take place
4) sugar (glucose)
Sugar is needed for energy
Learning
learners' ability to read about how plants help the balance of carbon dioxide and oxygen in the air
Lesson 4
Listening : To develop leamers ability to listen to a discussion and complete a worksheet based on it
use reading comprehension skills in order to order a text
listen for scientific information
use scientific language to complete a text about photosynthesis
write quiz questions on a given topic
Carbon dioxide
Leaf
Photosynthesis
Speaking
Imagine you are explaining photosynthesis to a classmate. What would you say
Use some present passive sentences
First Of all, plants
Then, they
This
Oxygen is
Sugar and oxygen are
- Object + 2- v. to ( is- am — are simple present ) 3- main Verb
Present passive
Use of English: Present passive In scientific and technical writing, the passive is often used. This is because we focus on the action, not the person or the thing that does the action
Oxygen is released into the air through the leaves
We store information in the computer
Subject verb object
information is stored in the computer
object verb to be main verb P.P
Listening
Listen to Alia and Zahra doing their Science homework. Help them to complete the worksheet their teacher has given them
Photosynthesis and aerobic respiration
When there is bright light
There is more photosynthesis than reiration. carbon dioxide taken
. More oxygen than carbon dioxide and oxygen
When there is dim light
There is equal and respiration. No gases
In other words, oxygen and carbon dioxide When it's dark
There is respiration, but there is no photosynthesis. Oxygen and carbon dioxide Video ………... More carbon dioxide than oxygen
2. S guenout S. aren't taken in
8. is given out
3. 6. gwen out
9. is produced
4. are given out 7. in
Present passive
Use of English: Present passive In scientific and technical writing, the passive is often used. This is because we focus on the action, not the person or the thing that does the action
Oxygen is released into the air through the leaves
When plants respire, carbon dioxide ………. In (take in)
When plants respire, oxygen ……........ (release) into the air
Energy …….... (made) by the plant
Water is ………. ( take up) by plant roots
Sugar ………. (.produce) in the plant
Sunlight ……..... (need) for photosynthesis to take place
When plants respire, carbon dioxide ..is..taken. In (take in)
When plants respire, oxygen ….. is released ........ (release) into the air
Energy is made.. (made) by the plant
Water is taken up ( take up) by plant roots
Sugar iS produced (.produce) in the plant
Sunlight is…. needed... (need) for photosynthesis to take place
Workbook
Ac 4: Complete the text using the present passive of the verbs in brackets
It is thought I (think) that more than half the earth's rainwater ............ 2 (hold). by the Amazon forests. Water ..……. 3 (take up) by the forest trees. It .………..4 (release) into the atmosphere. Mist and clouds .…...… 5 (form). Rainforests are sometimes called 'the lungs of the earth'. They help to keep the air clean and to provide the oxygen we need to breathe. During photosynthesis, carbon dioxide ..….... .to 6 (take in) by the trees and oxygen …………. 7 (give out)
Workbook
Ac 4: Complete the text using the present passive of the verbs in brackets
It is thought I (think) that more than half the earth's rainwater......is held....... 2 (hold). by the Amazon forests. Water ...is. taken .up. 3 (take up) by the forest trees. It ...is released.4 (release) into the atmosphere. Mist and clouds ...are..fromed… 5 (form). Rainforests are sometimes called 'the lungs of the earth'. They help to keep the air clean and to provide the oxygen we need to breathe. During photosynthesis, carbon dioxide ....is..taken .to.. 6 (take in) by the trees and oxygen ..is .given out. 7 (give out)
Workbook
Ac 5: write the sentences in the correct places
Carbon dioxide is taken in and oxygen is given out
Neither oxygen nor carbon dioxide are given out or taken in The plant produces more carbon dioxide than oxygen
More oxygen than carbon dioxide is produced
There is no photosynthesis
When it's dark, oxygen is taken in and carbon dioxide is given out
When there is bright light, photosynthesis happens
When there is dim light, both photosynthesis and respiration take place
Workbook
Ac 5: write the sentences in the correct places
dioxide is taken in and oxygen is given out
Neither oxygen nor cartXn dioxide are given out or taken in
The plant produces more carbon dioxide than oxygen
More oxygen than carbon dioxide is produced
There is no photosynthesis
When it's dark, oxygen is taken in and carbon dioxide is given out
When there is bright light, photosynthesis happens
When there is dim light, both photosynthesis and respiration take place
When there is bright ligh photæynthesis happens
Carbon dioxide is taken in and oxygen is given out
When there is dim light, photosynthesis and respiration take place
Neither oxygen nor carbon dioxide are given out or taken in
When it's dark, oxygen is taken in and carbon dioxide is given out
There is no photosynthesis
The plant produces more carbon dioxide than oxygen