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Grade 4 Unit L.1 Diversity of Habitats and Living Things
1
Life Science
Unit 1: Branching Key
Unit 2: Habitats
Unit 3: Life cycles of living
organisms
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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:
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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.
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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.
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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?
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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.
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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.
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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.
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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
Grade 4 Unit L.1 Diversity of Habitats and Living Things
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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