Unit 1: Branching Key Unit 2: Habitats Unit 3: Life cycles ... · PDF fileGrade 4 Unit L.1...

Grade 4 Unit L.1 Diversity of Habitats and Living Things

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Life Science

Unit 1: Branching Key

Unit 2: Habitats

Unit 3: Life cycles of living

organisms


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Know the importance of correctly identifying organisms

Know how to use a simple branching key to make

correct identifications of organisms.

Unit 1:

Lesson 1: Branching Key

By the end of this unit you should:


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.افبر١ؼ زؼش٠ف اجبربد اؾ١ابد اغخ فشع ٠سزخذ اؼبء

Lesson 1:

Scientists use branching keys to identify unknown plants or animals.

A key is a series of questions, each with two possible answers.

The answers lead you to next question or will identify the unknown

organism.

فشع افبر١ؼ غػخ االسئخ ازسسخ ى سؤاي اعبثز١ ؾزز١.

االعبثخ رمدن ا اسؤاي ازب ا رؼشف اىبئ اغي.

Three steps for using branching keys:

1- Take one organism at a time.

2- Start with the first question and go through the other following

questions for that organism only.

3- After you identify the first organism start over with the next one.

:فشع افبر١ؼ خطاد اسزخذا

.اخزش وبئ اؽذ فمػ ف الذ فس.1

.اثذء ثبسؤاي االي ص او ثبل االسئخ ىبئ از اخزشر فمػ.2

.اىبئ از اخزشر ل ثبخز١بس وبئ اخش ارجغ فس اطش٠مخثؼذ رؼش٠ف .3


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Activity (1): Use the branching key to identify the following:

:اسزخذ فشحع افبر١ؼ زؼش٠ف االر

Is it a living organism?

YES NO

Does it have green parts?

YES NO

shoe

Does it have wings?

lettuce

YES NO

Bird ant


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Activity (2):

Use the following branching key to identify the following organisms.

Write the appropriate letter in the empty box :

Does it have fins?

NO YES

Does it have feathers?

YES NO

Does it have hair?

YES NO

Does it have a shell?

YES NO

REMEMBER:

Don't just guess. Use the branching key. : رزوش

اسزخذ فشع افبر١ؼ, الرخ


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Activity (1):

Use the following branching key to identify the organisms in the

pictures:

Write the name of the animal below each picture.

Does it have legs?

NO YES

Does it have a shell? Does it have wings?

YES NO NO YES

Does it have 8 legs?

YES NO


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Key Terms:

Branching Key

فشع افبر١ؼ

Identify ٠ؼشف

Organism وبئ

Key Ideas:

Using branching keys to

identify and name common

animals and plants. رسزخذ فشع افبر١ؼ زؼش٠ف رس١خ اؾ١ابد

. اجبربد

Key Questions:

Put (true) or (false): (: خطأ)ا ( صؼ)ظغ 1- A branching key is a series of question with one possible

Answer. ( )

) ( فشع افبر١ؼ غػخ االسئخ ازسسخ از ب إعبثخ اؽذح فمػ .1

2- The first step in using a branching key is to choose two

organisms at a time. ( )

) (.اخطح اضب١خ ػذ اسزخذا فشع افبر١ؼ ا رخزبس وبئ١ ف الذ ااؽذ .2

3- Scientists use branching keys to identify unknown

animals and plants. ( )

) (.٠سزخذ اؼبء فشع افبر١ؼ زؼش٠ف اؾ١ابد اجبربد اغخ .3

Project: Cut out pictures of four different animals and construct your own branching key.


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Unit 2:

Lesson 1: Habitats

Lesson 2: Habitat Protection

By the end of this unit you should:

Recognize similarities and differences in terrestrial, marine and fresh water habitats.

Know how differences in habitats can determine the organisms

that live there.

Know that there is a need to protect habitats as the change in habitats can affect the numbers and types of

organisms that can live there.


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Lesson 1:

Living organisms need food, water, a place to live and reproduce.

They can find these things in their habitats.

Many kinds of plants and animals can live in one habitat, we call

them inhabitants.

اسىباس د از رؼ١ص ف اغ ٠طك ػ١اجبربد اؾ١اب

Can you say this five times????

Inhabitants, inhabitants, inhabitants

Activity: Find 5 different inhabitants in the following picture:

A habitat is a place where plants and animals live

ش ف١ اجبربد اؾ١ابد اغ اىب از رؼ


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These animals and plants live on land. We call this type of habitat

Terrestrial.

. ا١بثسخ طك ػ غب اس رؼ١ص ػ االسض اجبربد اؾ١ابد از

In the picture above find five different living organisms.

These animals and plants can live in salty water. We call this type of

habitat Marine.

. اج١ئخ اجؾش٠خ از رؼ١ص ف ا١ب ابؾخ طك ػ غب اس داجبربد اؾ١اب


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In the picture above find five different living organisms.

These living organisms can live in fresh water. We call this type of

habitat Fresh water.

. اجبربد اؾ١ابد از رؼ١ص ف ا١ب اؼزثخ طك ػ غب اس ا١ب اؼزثخ


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Since there are many differences between the three habitats, it is

important for the living organisms that live in each habitat to have

special features. فئ ا روش ا و اىبئبد از , ثب ا بن فشق وج١شح ث١ ااغ اضالس از روشد

. اغرؼ١ص ف ز ااغ ب خصبئص ١ضح رىب اؼ١ص ف ز ا

For Example:

1- Fish: Have gills to breathe in water and

fins and tail to swim.

.ا خ١بض١ رسبػذب ػ ازفس ذ٠ب صػبف ر٠ رسبػذب ػ اسجبؽخذ٠: االسبن

2- Dogs : Have lungs to breathe air

and feet to move on land.

اىالة ذ٠ب سئزب ززفس ااء اسع زس١ش ػ ا١بثسخ

Terrestrial Marine Fresh water

Type land

Water

Salty water

Water

Fresh water

Plants

+ + +

Animals

+ + +

Gills Fins

Tail


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Key Words:

Habitat

اغ

Inhabitant اسىب

Terrestrial ا١بثسخ

Marine اج١ئخ اجؾش٠خ

Fresh water ا١ب اؼزثخ

Key Ideas: A habitat is a place where

animals and plants live. غ اىب ار رؼ١ص ث اجبربد ا

اؾ١ابد

There are three different

types of habitats: terrestrial,

marine and fresh water. , ا١بثسخ: بن صالصخ ااع ااغ

. ا١ب اؼزثخ, اج١ئخ اجؾش٠خ

Different animals can live in

different habitats because they have special features.

Key Questions: 1- Define habitat.

………………………..................................................... .........................................................................................:ػشف اغ

2- Write the scientific term:

اوزت اصطؼ اؼ .2

-Plants and animals that live in one habitat (………….) ( : )--------------------اجبربد اؾ١ابد از رؼ١ص ف اغ

- Land habitat ,غ االسض (………….)

- Salt water habitat غ ا١ب ابؾخ ).......................(

-Helps fish breathe in the water, از ٠سبػذ االسبن ػ ازفس ثببء (……..........…….)

Project: How many living organisms live in your home?


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Lesson 2:

Habitats are the source of food, water and place to live. Any

change in the habitat will affect the sources of life for the

inhabitants.

رؾذس ف ازغ١شاد از, صبدس اغزاء ابء اىب از رؼ١ص ث اىبئبد ااغ

. اسىب رؤصش ػ ؽ١بح ااغ

Some changes are caused by nature, others are caused by

humans.

.ثؼط ازغ١شاد از رؾذس ف ااغ رسججب اطج١ؼخ ثؼط ازغ١شاد ٠سججب االسب

Change caused by

Here are some examples of changes *caused by nature:

Nature Human


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**Some changes are caused by humans: : ثؼط ازغ١شاد ٠سججب االسب

1-Cutting trees: to use the wood in industry and to build more

houses. ػخ ف ثبء اج١د ف اصب رسزخذ االخطبة: لطغ االضغبس

2- Dumping waste from factories in water and on land.

امبء خفبد اصبغ ثب١ب ػ ا١بثسخ


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3- Oil tankers accidents. ؽادس بلالد افػ

When we cause changes in the habitat, we will cause the

animals to die or look for a different place to live. This will

decrease or increase the number of inhabitants.

اج١ئبد فزا ٠سجت د اؾ١ابد ا اجؾش ػ اغ اخش رغ١شاد ف ااغ ػذب رؾذس

. ٠م ا ٠ض٠ذ اػذاد اسىب ف ز ااغ زا, ؼ١ص ثب

What can we do to protect our habitat? برا سزط١غ ا فؼ ؾب٠خ اغب؟

1. Plant more trees. صساػخ ػذد اوجش اجبربد

2. Keep our streets and beaches clean. ثمبء اطاسع اطاغئ ظ١فخ إاؼ ػ


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Key Words: Protect

ؾ

Change رغ١ش

Nature غج١ؼخ

Human االسب

Key Ideas: Changes in habitats affect the

number of inhabitants. ازغ١شاد ف ااغ رؤصش ف اػذاد اسىب زه

. اغ

Changes in habitats can be

caused by humans and nature. ازغ١شاد ف ااغ لذ رسججب اطج١ؼخ لذ

. ٠سججب االسب

Key Questions:

Write (true) or (false): - Changes in habitat will increase the number of inhabitants.

. ) ( ازغ١شاد ف ااغ رض٠ذ ػذد اسىب

- Changes in habitats can be caused by humans or nature.

( ) ازغ١شاد ف اج١ئبد لذ ٠سججب االسب ا اطج١ؼخ

- Cutting trees is caused by humans.

( ) لطغ االضغبس ٠سججب االسب

- Dumping waste into the water is caused by nature. ( ) امبء اخفبد ف ا١ب رسججب اطج١ؼخ

Project: Choose an organization that takes care of the environment in

Qatar and find out more about it.


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Unit 3:

Lesson 1: Life cycles of living

Organisms

- Life cycle of humans

- Life cycle of animals

- Life cycle of plants

By the end of this unit you should: Know that living organisms produce young.

Recognize the main stages in the life cycle of

- Humans

- Animals

Describe the main stages in the reproduction of flowering

plants.

Illustrate ways in which seeds are dispersed.


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Lesson 1:

Humans and animals need to reproduce. االسب اؾ١ابد ٠ؾزبع زىبصش

Look at the next picture.

Is that how you looked like?

When you were a baby?

Living organisms produce young that look like them but are

much smaller.

These young will grow to become adults that look like their

parents.

In order to become adults, the young should go through

many stages of life.

A life cycle describes all the stages in a living organism’s

development. A life cycle has no beginning and no end. It

goes around and around like a bicycle wheel.

. دسح اؾ١بح رصف و اشاؽ زطس اىبئبد اؾ١خ

. دسح اؾ١بح ١س ب ثذا٠خ ١س ب ب٠خ


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.ب ٠ذس ػغ اذساعخندسح اؾ١بح رذس

A New human life starts when a baby is born.

The adult father and adult mother mate and give birth to a

baby that will then grow to become a child.

A few years later the child will become a juvenile.

The juvenile grows to be an adult that can mate, a new life

cycle starts.

Meanwhile, the mother and father grow old with time and

will eventually die.

All living organisms produce young.

الغبة ٠زضاع االة اجبؾ اال اجبغخ , يرجذء دسح ؽ١بح االسب ػذ الدح اطف

ص ٠صجؼ اشاك , اا ف شاك ثؼذ ساد ٠صجؼ اػ, ١صجؾا اغفبالاالغفبي ٠ىجش

. رجذء دسح ؽ١بح عذ٠ذح ٠زضاط ثبغبا

Birth Child

Juvenile

Old age Adult


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. ؽخ اط١خخخ ثؼذب ا افبحثؼذب ٠ىجش ااذا ش

Like humans, the young of every living organism goes through its

own life cycle to become an adult.

Here are some examples on the life cycles of some common

Animals:

As you look at the life cycles try:

1. To describe the young of these animals.

2. To recognize the main stages of their lives (birth, juvenile,

adult, mating, old age and death).

3. To know the order of the stages.

: ٠بح ؽبي اػذب رظش ا دسح اؼ

رصف صغبس اؾ١ابد .1

,اطفخ, االدح) ر١ض اشاؽ االسبس١خ ف دسح ؽ١بح ز اؾ١ابد .2

( افبح, اط١خخخ,اضاط,اجؽ,اشامخ

a. The Life Cycle of Fish: دسح ؽ١بح االسبن

Egg

Baby fish

Adult fish


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b. The Life Cycle of a Frog (amphibians)

(اجشبئ١بد)دسح ؽ١بح اعفذع

c. The Life Cycle of a Butterfly (insects):

(اؾطشاد) دسح ؽ١بح افشاضخ

Eggs

Tadpole

Adult frog

Pupa

Adult Butterfly

Eggs


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d. The Life Cycle of a Chicken (bird) : ( اط١س)دسح ؽ١بح اذعبعخ

e. The Life Cycle of a Turtle (reptile): (اضاؽف)ح دسح ؽ١بح اسؾفب

Caterpillar

Egg

Chick

Chicken

Pullet

Eggs

Baby turtle

Adult turtle


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Just like animals, plants are living organisms that need to

reproduce. اجبربد رزىبصش ا ٠عبا , وب ف اؾ١ابد

Flowering plants grow from seeds produced by flowers.

.ربد اضش٠خ ر اجزس از رزغب االصبساجب


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The following diagram shows how a seed grows to become an

adult plant. Different plants make seeds that are different in size,

colour and type. . د ثبؾاخطػ ازب ٠ظؼ اجزسح زصجؼ جب

. اجبربد اخزفخ رزظ ثزس خزفخ ثبؾغ ا اع

The seeds need a warm damp place to grow.

The seeds do not always grow near their parents.

The seeds can be transported from one place to another in

different ways we call it seed dispersal

اجزس رؾزبط ا ىب دافئ سغت ز

. اجزس دائبا ثبمشة اذ٠بالر

٠ى ا رزم اجزس ىب ا اخش ثطشق خزفخ رس ازطبس اجزس

Why do you think seeds should be dispersed?

Would they grow well if there were too many seeds in the same

place? Would they have enough food, water, and light?

Seed

The new plant grows more roots and leaves.

The new

plant flowers.

Seeds

are spread.


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Different types of seeds are dispersed in different ways:

Some have spiny hooks to attach themselves

to animals. ثؼط اجزس ذ٠ب اضان ػ ضى اخطبف رؼك فسب ثبؾ١ابد

By animals for examples squirrels burry the

nuts that they do not eat.

ضال اسبعت رذف اجذق از رأو: خالي اؾ١ابد

The cover dries up and the seeds fall to the

ground. . االسض٠غف اغالف از ٠غط اجزس فزسمػ اجزس ع

Some seeds travel by wind. رزم اجزس ػ غش٠ك اش٠بػ

Some seeds can be

dispersed by humans. رزم اجزس ػ غش٠ك االسب


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Project:

- Plant a seed and keep a chart to record your observations.

- Use your family album and try to construct your own life cycle.

Key Questions:

- Reorder the following Life Cycles. : ازب١خ اػذ رشر١ت شاؽ دسح اؾ١بح

1- Human life cycle دسح ؽ١بح االسب - ( )juvenile اشامخ

- ( )old age اط١خخخ

- ( )mating ازضاط

- ( )child اطفخ

2- Write two ways of seed dispersal? اوزت غش٠مز١ غشق ازطبس اجزس

1- --------------------------------------------------------------- .

2- ---------------------------------------------------------------.

Key

Words: Reprodu

ce ازىبصش

Life cycle دسح اؾ١بح

Birth االدح

Child غف

Juvenile شاك

Mating ازضاط

Old age اط١خخخ

Seeds

dispersal ازطبس

اجزس

Key Ideas: Know that animals produce young

اؾ١ابد رزظ صغبساا

A life cycle describes all the stages in a living

organism's development. دسح اؾ١بح رصف و شاؽ رطس اىبئبد اؾ١خ

The main stages in the life cycle of humans

are: birth, child, juvenile, adult mating and old

age. , غفخاي, االدح: اشاؽ االسبس١خ ف دسح ؽ١بح االسب

. اط١خخخ, ازضاط, اجؽ, اشامخ

Recognize the main stages in the life cycle of

fish, bird, amphibian, reptile and mammal. , اجشبئ١بد,اط١س, ر١١ض اشاؽ االسبس١خ ف دسح ؽ١بح االسبن

. اضذ١٠بد, اضاؽف

Describe the main stages in the life cycle of

plants and ways of seed dispersal. .٠صف اشاؽ االسبس١خ ف دسح ؽ١بح اجبربد غشق ازطبس اجزس

Unit 1: Branching Key Unit 2: Habitats Unit 3: Life cycles ... · PDF fileGrade 4 Unit L.1...

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Transcript of Unit 1: Branching Key Unit 2: Habitats Unit 3: Life cycles ... · PDF fileGrade 4 Unit L.1...