science 3

Unit 2

Words to learn Date: …./.…/….....

Picture Word Thai Meaning

Habitat ทอ่ี ยู่อาศัย

Hollow โพรง

Squirrel กระรอก

Fun fact
• A squirrel’s front
teeth never stop growing.

50 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 2

4. Habitats (Shelter)

Animals live in environments or habitats. A habitat provides
everything that an animal needs to survive. All living things need air,
water, food, and a space to live. Animals also need ways to stay safe.

Animals need habitats to live in and provide warmth, shelter
and protection from their enemies. Animals can live on land, in
trees, in hollows in the trunks of trees, and in water.

Cows live on land. Monkeys live in trees.

SCIENCE LEARNERS MATERIALS GRADE 3 51

Unit 2

Siqnutihrreeltsrulnivkesinofhtorelleosw.s Fish live in water.

Some aannidmianlswlaivteero. n land Somethaendimesaelsrtl.ive in

Somceoaldnipmlaaclsesliv. e in

52 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 2

Where do you find these animals?

Fill in the blanks
ppoalraror tbse ars stihgaerrkss jgeollaytfsis h cpaemngeulsin s
1. You find ________________ in 2. You find ________________ in
the____f_o_r_e_s_t_._______________. the_________________________.

3. You find ________________ in 4. You find ________________ in
the_________________________. the_________________________.

5. You find ________________ in 6. You find ________________ in
the_________________________. the_________________________.

7. You find ________________ in 8. You find ________________ in
the_________________________. the_________________________.

SCIENCE LEARNERS MATERIALS GRADE 3 53

Unit 2 JUNGLE

Where do the animals live?

Let's talk about them.

CAVE POND

NEST KENNEL

WHERE DO THE
SEA ANIMALS LIVE ?

TREE FOREST FARM

A: Fill in the blanks.

land trees water hollows

1. Frogs live on ___________________ and in __________________.
2. Monkeys live in __________________________________________.
3. Squirrels live in _______________________ in the trunks of trees.
4. Whales live in ______________________________.
5. Horses live on ______________________________.

54 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 2

What do animals need?

food water air habitat

Write about what animals need to live. Make questions and
answers following the example below.

1. AW.. nhimatadlso naeneimdafolsondeteodlivtoe.l.i.ve??
2.

3. ..

4. ..

Brain Teasers

Do you know...

• Have you ever surveyed around your school ?
• Did you see any animals living there ?

SCIENCE LEARNERS MATERIALS GRADE 3 55

Unit 2 Date: …./.…/….....

Words to learn

Picture Word Thai Meaning

Survey สำ� รวจ

Material วัสดุ

Present น�ำเสนอ

Fun fact :

Ants are living creatures,
which never sleep.

56 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 2

Science in Action!

Activity : anSimuravlesy. Tinheyonucrhsocohsoeoloannedalnisimt tahletonasmtuedsy.of

Materials: 1. A magnifying glass 3. A pencil
2. Coloured pencils 4. A notebook

Procedure:

1. Divide students into groups. Each group will find an area
to survey with the supervision of the teacher.
2. Each group will survey and name the animals they can
see in school.
3. Each group will study about one kind of animal that they
have chosen.
4. The groups will present their work.

List the names of animals that you saw in your school.

Animals in school

SCIENCE LEARNERS MATERIALS GRADE 3 57

Unit 2

58 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 2

Fun Activity : My Mask

Directions.
1. Draw the face of an animal that you

like on a piece of bond paper.
2. Colour and decorate it from any

materials to make a mask.
3. Let's play a game "Who is behind

the mask?" or role play.

SCIENCE LEARNERS MATERIALS GRADE 3 59

Unit 2

Animals need their habitats.

Where does each animal live?
Tick the correct habitat of each animal.

Animal waInter Insothile On land Iannlawdnadotenr soIonnilltaahnnedd

60 SCIENCE LEARNERS MATERIALS GRADE 3

Unit Test Unit 2

A: Answer the questions. How many points did you get ?

1. What are the necessary factors for an animal 's life and growth ?
______________________________________________

2. Why do animals need food ?
______________________________________________

3. Do all animals eat the same food ?
______________________________________________

4. Do animals need air to live?
______________________________________________

5. Where do monkeys live ?
______________________________________________
B: Classify the animals How many points did you get ?
depending on their food.

pig deer fox cow rabbit tider chicken fish
lion bird snake horse elephant crocodile cat

SCIENCE LEARNERS MATERIALS GRADE 3 61

Unit 2

How many points did you get ?

C: Matching.

a. Air b. Water c. Carnivores d. Herbivores e. Omnivores

_____ 1. Animals that eat both meat and plants.
_____ 2. Animals that eat only plants.
_____ 3. Animals that eat only meat.
_____ 4. Animals need it to sustain their lives.
_____ 5. Animals need it to breathe.

How many points did you get ?

D: Choose the best answer.

1. Which are not necessary factors for an animals life and growth ?
a. Food and Water b. Air and Habitat c. Soil and Air
2. What do birds eat ?
a. Worms b. Ducks c. Fish
3. It is an important factor for animals. They will move to get it.
a. Air b. Food c. Sunlight
4. Which animals can breathe in the water or above the water ?
a. Fish b. Birds c. Rabbits
5. Which animals can live both on land and in water ?
a. Frogs b. Tigers c. Squirrels

62 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 2

Revision

A: Choose the best answer.

1.What are the factors for human life and growth?
a. Food b. Water c. Food, water and air
2.Which food gives us protein?
a. Fish and Meat b. Eggs and Milk c. Both a and b
3.Which food does not give us carbohydrates?
a. Sugar and Milk b. Rice and Flour c. Taro and Potatoes
4.What kind of food gives us minerals?
a. Fruit b. Vegetables c. Sugar
5.What kind of food gives us vitamins?
a. Fruit b. Vegetables c. Nuts
6.Which food should we eat to be healthy?
a. Hamburger b. Pizza c. Fried rice
7.What is the best way to rest?
a. Exercising b. Sleeping c. Watching TV
8.How many percent of water is our body made up of?
a. 70% b. 80% c. 90%
9. How many glasses of clean water should we drink a day?
a. Six b. Seven c. Eight
10.What is the gas we use to breathe in?
a. Carbon dioxide b. Oxygen c. Nitrogen

SCIENCE LEARNERS MATERIALS GRADE 3 63

Unit 2

Revision

B: Answer the questions.

1.What are the necessary factors for an animal's life and growth?
____________________________________________________________
2.What happens if animals lack air ?
____________________________________________________________
3.Which factor makes animals move and work properly ?
____________________________________________________________
4.What do we call animals that eat only plants ?
____________________________________________________________
5.What food do rabbits eat ?
____________________________________________________________
6.What is the fastest animal ?
____________________________________________________________
7.What is the biggest bird ?
_________________________________
8.Is a whale a fish or a mammal?
_________________________________

64 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 2

Revision

C: Let’s create & draw our own meals from these
ingredients given or your favourite one. Name the food and tell
us what kind of food group that you eat for the meals, too.

lettuce beef cucumber pork
eggs carrot fish milk
potato tomato water cereal
orange juice tofu bread sausage

My breakfast: I eat _fr_ie__d_r_ic_e__w_i_th__fr_i_e_d_e_g__g.
_I _d_ri_n_k_s_o_m__e__m_i_lk_._______________________
______________________________________
______________________________________

My lunch : I eat_______________________
______________________________________
______________________________________
______________________________________

My dinner : I eat______________________
______________________________________
______________________________________
______________________________________

SCIENCE LEARNERS MATERIALS GRADE 3 65

Unit 2

Revision

D : Matching

a.)Air b.) Water c.) Carnivores d.) Herbivores e.) Omnivores
_____1. Lions, tigers and crocodiles are ______________ .
_____2. Birds, ducks and chickens are _______________.
_____3. Cows, giraffes and rabbits are _____________.
_____4. Animals need it to sustain their lives.
_____5. Animals need it to breathe.

E: Use these words to fill in each blank.

Vegetables exercise sleeping protein 70 percent

1.The best way to rest is ______________________.
2.Our body is made up of ____________________ of water.
3.Fish, meat, eggs, milk and nuts give us ______________________.
4.____________________________ give us minerals.
5.We should get enough rest and regular _______________to keep

our body strong and healthy.

66 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 2

Revision

F: iNt uinmebaecrhegarcohupp.icture with the correct word and identify

1 cat 2 dog 3 mouse 4 horse 5 fish
6 sheep 7 cow 8 elephant 9 hen 10 rabbit
11 panda 12penguin 13 bird 14 monkey 15 frog

Herbivores Carnivores Omnivores

SCIENCE LEARNERS MATERIALS GRADE 3 67

Unit 2
I am a frog. I can jump.

Look at the animals. What are they? What can they do?
jump run fly walk swim

I am a ............... . I am a ............... . I am a ............... .
I can ................... I can ................... I can ...................

I am a ............... . I am a ............... . I am a ............... .
I can ................... I can ................... I can ...................

I am a ............... . I am a ............... . I am a ............... .
I can ................... I can ................... I can ...................

tortoise frog fish tiger parrot
rabbit lion monkey dolphin

68 SCIENCE LEARNERS MATERIALS GRADE 3

The Circle Of Life Unit 3

Life Cycle Of An Animal.

Unit 3 The Circle Of Life

Learning Concept

Life Cycle Of An Animal A Human’s Life Cycle
• Animals that give birth as a baby. A Chicken’s Life Cycle
• Animals that give birth by laying A Frog’s Life Cycle
A Butterfly’s Life Cycle
eggs. A Mosquito’s Life Cycle

Brain Teasers
Do you know about “The life cycle of a butterfly”?

• Complete these words.

A__ult

P__p__ E__ g s
C__t__rpill__r

Words to learn Unit 3

Picture Word Date: …./.…/….....

Thai Meaning

Parents พ่อแม่

Embryos ตวั ออ่ น

Fully grown โตเต็มที่

Fun fact

By the time the embryo reaches 28 days, 3 primary brain
parts have already developed.

SCIENCE LEARNERS MATERIALS GRADE 3 71

Unit 3

Life Cycle of an animal

A cell is the smallest unit of life and its characteristics enable
it to grow. Growth of living things is the increase in the number and
the substance amount of the cells. They make the size and weight
and change in cells until they look like their parents.

Mother and baby

A rhinoceros and its baby An elephant and its baby

A kangaroo and its baby A penguin and its baby

wemillbAinrnyciomresaa(lsagenroinawntthhimethanaluttmhreabpterirosodnfuosctteaysgeestesf,xucullhayallgynrgsotewasrnta)f.rnodWmdheeegnvgeilsto’.spCfieunlltllosy
grown it will change in a deteriorating way and die.

72 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 3

The life cycle of an animal

When animals grow into adults, they are ready to reproduce
as male and female germ cells, then are fertilized, and a zygote is
obtained (a zygote is the fertilized egg which is ready to develop
into an embryo). These changes will occur step by step and are
relatively stable for each animal.

Each type of animal must always be born from that animal.
A baby boy must be born
from a mother.

A puppy must be born
from a dog.

The babies will also look like their parents.

SCIENCE LEARNERS MATERIALS GRADE 3 73

Unit 3

aSnomegegatnhiamtathlsebnehgaintclhifeesfraosmaebitahbeyr.a baby or laying

1. Some animals give birth as a baby.
They are called viviparous. Most mammals give birth as a baby.
• Some animals give birth as a baby on land.

A tigbearbayn. d its A monbkaebyya.nd its A lion and its baby.
• Some animals give birth as a baby in water.

A dolbpahbiny.and its A shabrakbayn.d its A gubpapbyieasn.d its

74 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 3

A : Match each animal with its baby.

SCIENCE LEARNERS MATERIALS GRADE 3 75

Unit 3 if the animals give birth on land.
if the animals give birth in water.
B: Write “L” in the
Write “W” in the

Monkeys

Giraffes

L

Sharks

W Tigers

Guppies

Dolphins

76 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 3

C: Let’s have a chat!

- Divide the students into groups.
- Explore and discuss the life cycle of an animal
that you like. ( Choose one kind of animal )
- Present to your friends and let’s have fun
discussing.

Draw and write about the life cycle of an animal.

Brain Teasers

• Can animals give birth in different ways?
No, they can’t. They only give birth as a baby.
Yes, they can. They can give birth by laying eggs too.

SCIENCE LEARNERS MATERIALS GRADE 3 77

Unit 3

Words to learn Date: …./.…/….....

Picture Word Thai Meaning

Oviparous ทอี่ อกไข่

Adulthood วยั ผูใ้ หญ่

Hatch ฟักไข่

Do you know…
* Is it better to lay 1,000 decent eggs, or to lay a really big,
strong egg?
A. The strong egg! Protect your baby.
B. Strength in numbers! Lay as many as possible.
C. It depends…
Answer : C. is correct. Each species has developed its own

strategy for reproduction.

78 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 3

2. Animals that give birth by laying eggs then hatch.
They are called Oviparous.
Some animals lay eggs on land .

Turtles Chickens Ostriches

Some animals lay eggs in water.

Frogs Fish Mosquitoes
Animals choose good places to give birth to their babies and
lay their eggs too.
An animal's life and growth depends on food, water and air for
breathing. These factors help them to grow healthy and be able to
do various activities in their daily lives.

Air Water Food

SCIENCE LEARNERS MATERIALS GRADE 3 79

Unit 3

The life cycle of a human.

Egg cell

Adult Baby

The egg cell is inside the female body.
When it reproduces it has been fertilized
with male sperm cells. It will then become a
zygote and continue to grow into an embryo.

Babies are born that look like their parents.

Humans grow into adulthood when they reproduce.

80 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 3

Answer the questions.

1. What do animals need to live and grow?
_____________ ______________ _____________
2. Write 3 names of animals that lay eggs on land.
_____________ ______________ _____________
3. Write 3 names of animals that lay eggs in water.
_____________ ______________ _____________

Cut and glue pictures of the following.
Animals that lay eggs...

SCIENCE LEARNERS MATERIALS GRADE 3 81

Unit 3

Lboaobky aotr tlhaey peigcgtusr.es and tick ( ) if they give birth as a

Brain Teasers Do you know…

Between a chicken and a frog … which one has changed or
not changed its appearance during its life cycle?

82 SCIENCE LEARNERS MATERIALS GRADE 3

Words to learn Unit 3

Picture Word Date: …./.…/….....

Thai Meaning

Species สายพนั ธุ์

Tail หาง

Tadpole ลูกอ๊อด

Fun fact Do you know…

Have you ever heard…?
• Frogs drink water through their skin.

• A frog’s eyes and nose are on the
very top of its head.

SCIENCE LEARNERS MATERIALS GRADE 3 83

Unit 3

Each animal has a different life cycle. Most animals have
simple life cycles, but the number of stages and the length of the
life cycle depends on the species. Each of them has their own way
of reproducing.
Some animals will not change their appearance during their
life cycle such as rabbits, monkeys, tigers, hippopotamuses, birds
and chickens.
Chicken

The life cycle of a chicken

Chick Eggs

Do you know…

A rooster is a male chicken. A hen is
a female chicken.

Let’s guess! Which one is a rooster
and which one is a hen?

84 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 3

Some animals will change their appearance in each stage as
they grow throughout their life cycle. Animals will stop growing when
they look like their parents or are fully grown like frogs, dragonflies,
butterflies or mosquitoes.

adult eggs

egg
froglet

tadploelgeswith tadpole

(Froglet)
•a•hinAnFddrotailtgedblgepesto:caloAepmshpeaaessataraa.dTbtpahaoielblfeygoirgflrlssroowgawi.rmes,mrietisnpgltaacailenbddebgcyiollmlsunefogsrssbhfrooerrabttehrreinaagtnh.dinigts,

SCIENCE LEARNERS MATERIALS GRADE 3 85

Unit 3

Complete the words.

1. What is the life cycle of a frog?

E__gs

Fr_g E__br__o

Tadpole with
______ legs

T__dp__le

2. What is the life cycle of a chicken?

R_ost_r H_n

The life cycle of a chicken

Ch__cks E__gs

86 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 3

Use these words to complete the sentences.

hen tails tiger dragonfly breathing froglet

1. Tadpoleshave________forswimmingandgillsfor____________.
2. We can call a tadpole with 4 legs a ________________.
3. A ____________ is an example of an animal that will change its
appearance as it grows throughout its life cycle. It will stop growing
until it looks like its parents.
4. A ______________ is an example of an animal that will not
change its appearance during its life cycle.
5. A __________ is a female chicken.

Brain Teasers Do you know…

Is the life cycle of a butterfly and the life cycle of a mosquito
the same or different?

SCIENCE LEARNERS MATERIALS GRADE 3 87

Unit 3

Words to learn Date: …./.…/….....

Picture Word Thai Meaning

Caterpillar ตวั หนอน

Chrysalis ดักแด้

Larva ลูกนำ้� ยุง

Fun fact

Do you believe that..…?
- Butterflies use their feet to taste.
- Mosquitoes fly an estimated 1 to
1.5 miles per hour.

88 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 3

Butterflies are animals that change their appearance during
their life cycle. Starting from the eggs to a caterpillar, then a chrysalis
and finally to a butterfly.

A chrysalis is the stage where a caterpillar stops eating anything,
does not grow anymore, builds fiber to cover itself and grows up as
a butterfly.

The life cycle of a mosquito begins with mosquito eggs to larva,
then pupa, and then it becomes a mosquito.
A larva is a young mosquito that still lives in water. As it continues
to grow, it will become a pupa, and then a mosquito.

SCIENCE LEARNERS MATERIALS GRADE 3 89

Unit 3

The life cycle of a mosquito

Mosquito Eggs

Larva

Pupa

A: Write and colour the life cycle stages below.

The life cycle of a _______________________.

1.___________ 2.___________

4.___________ 3.___________

Caterpillar Eggs Butterfly Chrysalis

First, _______________________Next,___________________________
Then,_______________________Last,___________________________

90 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 3

B: Write the mosquito's life cycle and circle the correct stage .

Larva Mosquito Pupa Mosquito eggs

SCIENCE LEARNERS MATERIALS GRADE 3 91

Unit 3

Unit Test How many points did you get ?

Choose the best answer.
1.What is the smallest unit of life that is able to grow?
a. A father b. A cell c. A mother
2.It is the increase in the number and the substance amount of cells.
a. Growth of living things b. Weight c. Size
3.Which animals give birth as babies?
a. Chickens b. Frogs c. Lions
4.Which animals give birth by laying eggs?
a. Ostriches b. Dolphins c. Whales
5.What is a baby dog called?
a. A calf b. A puppy c. A lamb

How many points did you get ?

Matching
a.) Frogs and butterflies b.) Gills c.) Rabbits and monkeys
d.)Chrysalis (Pupa) e.) A tail

_____ 1.) Animals that will not change their appearance during their
life cycles.
_____ 2.) Animals that will change their appearance in stages as
they grow throughout their life cycles. They will stop growing when
they look like their parents.
_____ 3.)Which part of a tadpole is used for swimming?
_____ 4.) Which part of a tadpole is used for breathing?
_____ 5.) Which stage of a butterfly is it when it stops eating?

92 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 3

How many points did you get ?

Use these words to complete the life cycles of animals.

Chrysalis Adult Tadpole Chicks Larva

1. Egg cell Baby Chicken Adult frog
2. Egg Caterpillar Froglet Butterfly
3. Frog eggs
4. Butterfly eggs Pupa Butterfly
5. Mosquito eggs

Draw and write the life cycle of an animal that you like.

SCIENCE LEARNERS MATERIALS GRADE 3 93

Unit 4 Materials

Materials
CMhaantegreiaslsIn
Revision

Materials Unit 4

Learning Concept

Materials and Changes in Materials

Things made of the same materials. Changes in materials when
Heated or Cooled.

Cooled Butter Heated

hyWaactinetrh Water hyacinth Melted butter

products

Brain Teasers
• Circle the objects that the magnet will attract.

Unit 4

Words to learn Date: …./.…/….....

Picture Word Thai Meaning

Structure โครงสรา้ ง

Metal โลหะ

Fabric ผ้า

Materials

Fabric, paper and wood are materials that can be seen every day.
Each has different properties. These properties determine the things
they can create. There are two basic types of materials;

• Natural materials; such as rocks, seashells, soil, and gold.
• Man-made materials; such as plastic, glass, and steel.
The properties of materials are paper, fabric, wood, metal, and plastic.

Things around us are made of different materials such as wood,
rubber, plastic, metal, fabric, and glass. Some objects are made of
many different materials.

96 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 4

Things made of the same materials

Have you ever observed the things around us made of different
materials?

For example a motorbike. Its structure is made of plastic and
metal, but its wheels are made of rubber and metal. Another example
is a pair of trainers. They are made of fabric, but their soles are
made of rubber.

mSterutacltuarnedispmlasatdice. of

A motorcycle mWehteael lasnadrerumbabdeer. of

A pair of trainers.

Trainers are made of fabric. Trainer soles are made of rubber.

SCIENCE LEARNERS MATERIALS GRADE 3 97

Unit 4

Science in Action

Activity: Objects Made of One Material.
Directions

Read, understand, and follow the methods. Record your
results, and then answer the questions.

Materials
1.Ice – cream sticks.
2.Glue
3.Other materials that you need to
decorate your object.

Methods
Divide students into groups. Each group plans, designs

and makes something using ice-cream sticks. Then, each
group will present their object in front of the class.

Let’s get an idea!

98 SCIENCE LEARNERS MATERIALS GRADE 3

Unit 4

Things made of the same materials.

Draw or design your thing below.

Activity questions. 2.What is your thing made of?
1.IWshitaat itsoyyoourratnhianpgp?liance?

3.Do you use other materials to make your thing, what are they?

Some objects are made of one material,
like a wall in a home is made of bricks. Can
we use bricks to make a walkway too?

SCIENCE LEARNERS MATERIALS GRADE 3 99