The document is a preparatory science textbook published by Diwa Learning Systems Inc., aimed at helping young learners discover science through engagement and inquiry-based activities. It emphasizes the importance of exploration and questions in learning, with a focus on topics such as body systems, plants, animals, matter, and the environment. The book also serves as a resource for teachers and parents to facilitate interactive learning and enhance children's understanding of scientific concepts.

1. MY SCIENCE ADVENTURE
Preparator y

2. My Science Adventure
Preparatory
Textbook
Philippine Copyright 2010 by DIWA LEARNING SYSTEMS INC
All rights reserved. Printed in the Philippines
Editorial, design, and layout by University Press of First Asia
No part of this publication may be reproduced or transmitted in any form or by any means electronic or
mechanical, including photocopying, recording, or any information storage and retrieval systems, without
permission in writing from the copyright owner.
Exclusively distributed by
DIWA LEARNING SYSTEMS INC
4/F SEDCCO 1 Bldg.
120 Thailand corner Legazpi Streets
Legaspi Village, 1229 Makati City, Philippines
Tel. No.: (632) 893-8501 * Fax: (632) 817-8700
ISBN 978-971-46-0170-3
The Editorial Board
Author
Dinna Santos-Valera is a candidate for a Master of Arts in Basic Education at the Ateneo De Manila
University. She earned her bachelor’s degree in Child Development and Education at Miriam College in
1988. She is a preschool teacher at Miriam College Child Study Center where she has been teaching for 20
years now. She was the Academic Coordinator for Math, Science, Art, Music, Play, and Media Education
from 2000 to 2003. She is a recipient of the President’s Award for Teaching Excellence in the Preschool
Department for the school year 2007–2008.
Consultant
Mona R. Alagar holds a master’s degree in Pre-Elementary Education from St. Joseph’s College–Quezon
City and a bachelor’s degree in Psychology from St. Paul College–Quezon City. She is a college instructor
and currently preschool area coordinator at St. Pedro Poveda College.

3. TO THE LEARNER
Science is all about discovery. Each day in your
life, you experience and discover something different
and something new to you. These discoveries lead to
learning. You may not know it, but there is science
involved in the things that you do everyday.
This book will help you in your discoveries. It will
explain to you what is happening, how it happens and
why it happens. This book will help you answer the many
questions you have in your mind. As you read along and
do the activities in the pages of this book, one discovery
might lead to other questions. Just keep on asking the
questions in your mind. All discoveries of our famous
scientists began with a question. Who knows, you might
be a famous scientist someday!
The Author

4. TO THE TEACHER
This Science book is all about discovery. This is
a book that will lead the students to ask questions
and discover new things as they search for answers
to their questions. Your role as a teacher is to explain
to the students through experiential activities how
the concepts happen and why they happen. To be able
to enrich learning, make your activities as interactive
as possible. Encourage an active participation from
your students so that they will learn by first hand
experience.
This book is only one of the tools that will help your
students learn. Your daily preparation in the classroom
will make the concepts in this book come alive. After
engaging the students in various hands on activities,
support your findings with explanations.
This book is also a helpful resource for parents
who should also be involved in the teaching and learning
process. There are review and enrichment activities
that may be done at home. By soliciting the participation
of parents, we are assured that learning goes on even
after school.
Have a wonderful discovery!

5. TABLE OF CONTENTS
Unit 1 Discovering the Growth and Changes in Me
Lesson 1 My Body ..............................................................................................2
Parts of My Body ..............................................................................4
Systems of the Body .....................................................................14
Lesson 2 The Sense Organs ......................................................................... 24
The Eyes .......................................................................................... 25
The Ears .......................................................................................... 29
The Nose ......................................................................................... 34
The Tongue ..................................................................................... 37
The Skin ........................................................................................... 40
Lesson 3 Needs of the Body ........................................................................ 45
Air ..................................................................................................... 45
Sunlight ............................................................................................ 46
Water ............................................................................................... 47
Healthful Foods ............................................................................. 49
Clothes ..............................................................................................51
Exercise ........................................................................................... 52
Rest and Sleep ............................................................................... 54
Home or Shelter ............................................................................ 55
Lesson 4 Health and Safety ......................................................................... 57
Healthful Practices ....................................................................... 57
Safety Practices ............................................................................ 60
Lesson 5 Growth and Change ....................................................................... 69
Unit 2 Discovering Plants and Animals
Lesson 1 Plants around Me ........................................................................... 82
Parts of a Plant .............................................................................. 83
Classification of Plants ................................................................. 92
Plant Habitats ................................................................................ 96
How Plants Grow .......................................................................... 100
Needs of Plants............................................................................ 103
Care for Plants ............................................................................. 107
Importance of Plants .................................................................. 109

6. Lesson 2 Animals around Me ........................................................................111
Classification of Animals ............................................................. 112
Animal Habitats ............................................................................ 115
How Animals Differ ..................................................................... 118
Sounds Animals Make ................................................................. 129
Animals and Their Young ............................................................ 131
Needs of Animals ........................................................................ 133
Care for Animals .......................................................................... 135
Importance of Animals .............................................................. 136
Unit 3 Discovering Things around Me
Lesson 1 Matter ............................................................................................ 140
States of Matter ......................................................................... 141
Solid ................................................................................................ 143
Liquid .............................................................................................. 150
Gas................................................................................................... 153
Importance of Air ....................................................................... 156
Lesson 2 Changes in Matter ....................................................................... 159
Solid Can Become Liquid ............................................................ 159
Liquid Can Become Solid ............................................................ 160
Liquid Can Become Gas ............................................................... 162
Unit 4 Discovering Earth and Space
Lesson 1 Earth............................................................................................... 166
Landforms ..................................................................................... 167
Water Forms ................................................................................. 191
Lesson 2 Weather ........................................................................................ 210
Lesson 3 Day and Night ...............................................................................222
The Sky During the Day ............................................................223
The Sky During the Night .........................................................226
Lesson 4 Care for the Planet Earth .........................................................229

7. UNIT
1

8. Lesson 1
Color the picture of a girl if you are a girl.
Color the picture of a boy if you are a boy.
2 My Science Adventure – Preparatory

9. Look at the pictures of people from all over the
world.
Can you tell which of them are boys and which
are girls?
Boys and men are male.
Girls and women are female.
Dear Parents,
A male and a female have many similarities and differences in their physical
appearance. Have your child identify some of these similarities and differences with you
(his or her parents) serving as models.
Discovering the Growth and Changes in Me 3

10. Parts of My Body
This is the head.
Read the names of the different parts of the
head.
hair forehead
eyebrow
eye
cheek
nose
ear
mouth chin
4 My Science Adventure – Preparatory

11. Circle the correct body part being
described.
1. Body part that
covers the head
2. Part of the
head from where
tears come out
3. Part of the head
found below the
mouth
4. Part of the head
that allows you
to hear sounds
5. Part of the head
that is above the
eyes
Discovering the Growth and Changes in Me 5

12. Complete the picture by drawing the different
parts of the head.
6 My Science Adventure – Preparatory

13. This is the trunk.
Read the names of the different parts of the
trunk.
shoulder
chest
abdomen
waist
hips
Discovering the Growth and Changes in Me 7

14. Draw the trunk to complete the picture of
the body of a child.
8 My Science Adventure – Preparatory

15. These are the limbs.
Read the names of the different parts of the
limbs.
elbow
arm
wrist
hand
fingers
thigh
knee
ankle leg
foot
toe
Discovering the Growth and Changes in Me 9

16. Trace your left hand and your right hand
below.
10 My Science Adventure – Preparatory

17. Circle the body part that will complete the
picture.
Discovering the Growth and Changes in Me 11

18. Where do these body parts belong?
Box the correct word.
1. head trunk limbs
2. head trunk limbs
3. head trunk limbs
4. head trunk limbs
5. head trunk limbs
12 My Science Adventure – Preparatory

19. Complete the picture.
Draw the missing parts of the head, trunk,
and limbs.
Dear Parents,
Play a game with your child. Describe a body part and its use and have him or
her point to the body part. Exchange roles afterward to find out how well your child can
describe and state the functions of the different body parts.
Discovering the Growth and Changes in Me 13

20. Systems of the Body
Do you ever wonder what is inside the head?
Look at the picture below.
Inside the head is the brain.
The brain allows the body to think, move, and
feel.
brain
14 My Science Adventure – Preparatory

21. Match each sentence with the correct
picture.
I can think
with my brain.
I can move
with my brain.
I can feel with
my brain.
Discovering the Growth and Changes in Me 15

22. Make a clenched fist. Put it on the left side of
your chest.
Your clenched fist is about the size of your
heart.
Look at the picture below. This is the heart.
The heart pumps blood to the different parts
of the body.
16 My Science Adventure – Preparatory

23. Using your red crayon, trace the broken lines
from the heart to the different parts of the
body.
Discovering the Growth and Changes in Me 17

24. Look at the picture below.
These are the lungs.
Your lungs help you breathe.
lungs
18 My Science Adventure – Preparatory

25. Do the following activity.
1. Place your hand
on your abdomen.
2. Breathe in.
What happens to
your abdomen as you
breathe in air?
3. Breathe out.
What happens to
your abdomen as
you breathe out
air?
Discovering the Growth and Changes in Me 19

26. What did you eat for breakfast?
Do you know what happens to the food you eat?
The food that you eat goes down to your
stomach.
Inside the stomach, the food is changed into
smaller pieces.
This process is called digestion.
mouth
stomach
small
intestine
large
intestine
rectum
20 My Science Adventure – Preparatory

27. Good eating habits help your body digest food
properly.
Draw a star ( ) in the box if the picture
shows a child practicing good eating habits.
Dear Parents,
The nervous, circulatory, respiratory, and digestive systems are just some of the
important systems of the body. Introduce to your child the functions of these systems and
the body parts (organs) that make up each system. Use pictures or available videos from
the Internet to make learning fun and interesting.
Discovering the Growth and Changes in Me 21

28. How much have you learned?
Circle the picture of the correct answer.
1. Boys and men
are
______.
2. Girls and
women are
______.
3. The face is
part of the
______.
4. The shoulders
are part of the
______.
22 My Science Adventure – Preparatory

29. 5. The legs and arms
are part of the
_____.
6. The ____ lets
you think, move,
and feel.
7. The ____ pumps
blood to the
different parts
of the body.
8. Food enters the
body through the
______.
9. Food is digested
in the _____.
10. The ____ let you
breathe.
Discovering the Growth and Changes in Me 23