School Mahinog National High School Grade Level VIII
Teacher IVY M. UBA Learning Area SCIENCE 8
Time & Dates MARCH 9, 2023
8:18- 9:06 AM (Newton)
10:21- 11:09 AM (Socrates)
11:09- 11:56 AM( Archimedes)
Quarter III
I. OBJECTIVES
A. Content Standards The learner demonstrate an understanding of reading the periodic table of element.
B. Performance
Standards
C. Learning
Competencies /
Objectives.
At the end of the lesson, the students should be able to:
a. Trace the development of the periodic table from observation based on similarities
in properties of element. S8MT-IIGH-II
b. Identify the periodic table based on readings and observations of elements.
c. Appreciate the value of its group of elements
II. CONTENT READING THE PERIODIC TABLE
III. LEARNING
RESOURCES
A. References BOOKS
1. Teacher’s Guide
pages
P. 247
2. Learner’s Materials
pages
K to 12 Basic Education Curriculum
3. Textbook pages
4. Additional
Materials from
Learning Resource
(LR) portal
B. Other Learning
Resources
From INTERNET
 https://www.google.com/search?q=reading+the+periodic+table&rlz=1C1GCEA_en
PH941PH941&oq=reading+the+periodic+table+&aqs=chrome..69i57.10263j0j1&so
urceid=chrome&ie=UTF-8
IV. PROCEDURES
A. Preliminary
Activities
B. Presentation of
objectives
C. Review of the
previous lesson
 Greetings
 Prayer
 Checking of Attendance
 Classroom management
The teacher will read the class objective of the lesson.
 What was the last topic that being tackled?
 Are you already familiar with the scientists who invented the periodic table?

D. Activity/
Motivation
TEXT TWIST
Present a scrambled words about elements of periodic table.
1. RCUEMYR
2. EADL
3. ACCMIUL
4. ORNGA
5. LTMUHLAI
E. Analysis Guide Questions
a. Are you familiar with those words?
b. What have you observe?
c. Where can we find those words?
F. Abstract
The modern periodic table is divided into 114 squares; each square represents an
element. The shape of the periodic table reflects the periodic law. The rows in the periodic
table are known as period. The periodic table has seven periods. The lengths of the
periods increase with the order of the period. Elements in a period have consecutive
atomic numbers. The first period has two elements, the second and third periods have
eight elements, the fourth and fifth periods each has 18 elements, and the sixth period has
32 elements and the seventh period has 32 elements. To keep the periodic table from
being too wide, 14 of the elements of the sixth period are placed under the main part of
the table, together with 14 corresponding elements from the seventh period.
The columns, which consist of elements having similar chemical properties, are known as
groups. There are three ways to label the groups in the periodic table. Traditionally, the
groups are labeled with Roman numerals together with letters A and B. In the United
States, the longer columns on the left and right are labeled IA through VIIIA, and the
shorter columns in the middle are labeled IB through VIIIB. Some chemists have switched
from Roman to Arabic numerals. For example, Grip IIIA is labeled 3A. In Europe, the groups
on the left are labeled IA through VILLA, and those on the right are labeled IB through
VIIIB.
In 1985, the International Union of Pure and Applied Chemistry (IUPAC )proposed a new
labeling system to resolve the controversy between the American and European systems.

Some groups are also given names.
Group IA – alkali metals
Group 2A – alkaline earth metals
Group 7A – halogens
Group 8A – noble gases
For example, group 3A is called boron family, group 4A is sometimes called carbon family,
Group 5A nitrogen family and group 6A oxygen family or chalogens.
Elements may also classified as either metals or nonmetals, based on their properties.
Most elements are metals.
Elements to the left of the line are called metalloids or semimetals.
G. Application Answer the following questions:
GROUPINGS (BY ROW)
Instructions:
Go to the board and identify the following elements if where did they belong,
whether what period, columns and if It is metal, non metal and metalloids.
Element Name Symbol Group number Period number Identify if
metal (M)
nonmetal (NM)
or metalloid
(Met)
Boron 13
Al

Tin Sn
Helium 18
Ne 18
Ca 4
Oxygen 2
1. Why is it important to know the elements of periodic table?
2. For example, the element oxygen why is it important in our day to day life?
H. Evaluation Identify the following.
________ 1. The elements in group IA are called?
_________ 2. The elements in group 2A are called?
_________ 3. The elements in group 7A are called?
_________ 4. The elements in group 8A are called?
_________ 5. What does IUPAC stands for?
I. Assignment Identify the elements that belongs to
a. Group 1A
b. Group 2A
c. Group 7A
d. Group 8A
Prepared by: Checked by:
IVY M. UBA MS. JADILYN ROSE S. YAMIT
Teacher Intern Teacher