DEVELOPMENT OF PERIODIC TABLE

1. DETAILED LESSON PLAN
Schools Quezon National High
School
Grade Level 8 Quarter 3rd
Student Teacher Irish P. Dela Cruz Learning
Area
Science Teaching Date & Time
I. OBJECTIVES
A. Content Standards The learners demonstrate an understanding of:
The periodic table of elements as an organizing tool to determine the chemical properties of
elements.
B. Performance
Standards
C. Learning Competencies
and objectives
The Learners should be able to:
Trace the development of the Periodic Table from observations based on similarities in
properties of elements (S8MT-IIIgh-11)
Specific Objectives:
Through inquiry based approach, the students should be able to…
1. Identify the scientists who contributed to the development of the Periodic Table.
2. Create a timeline of the history of the development of the Periodic Table.
3. Acknowledge the important of the development and need for the periodic table.
II. CONTENT DEVELOPMENT OF THE PERIODIC TABLE
III. LEARNING RESOURCES
A. References
1. Teachers guide Pages None
2. Learner’s Materials Pages 2o9-213
3. Curriculum Guide Pages 145
4. Textbook Pages None
5. Additional Materials from
LR Portal
None
B. Other Learning Resources

2. IV. PROCEDURES Teacher’s Activity Student’s Activity
A. Preliminary
Activities
1. Prayer
2. Energizer
3. Greetings
4. Checking of
Attendance
May I request everyone to stand up for our prayer?
Please remain standing for our energizer.
Good morning my beautiful and handsome science
learners!
It’s nice to see you too. Before you take your seats,
kindly arrange your chair properly and pick-up some
pieces of paper under your chair.
Okay, I see everything is clean. You may now take your
seat.
Turn your phone into silent mode to avoid any
interruption and keep your phone inside your bag.
Who among you are absent today?
Okay very good you are all present.
(The students stand up and pray)
(The students do the energizer)
Good morning ma’am, it’s nice to see you today!
(The students arrange the chair and pick-up
some pieces of paper)
Thank you Ma’am.
Yes, Ma’am. (The students silent their phone
and keep it on their bag)
None Ma’am.
C. Learning Materials Visual aids, Activity sheets, Rubric sheets, Clear tape, Pentel pen,

3. 5. Checking of
Assignment
Do we have an assignment? None Ma’am.
B. Reviewing
Previous Lesson or
presenting the new
lesson
(Elicit)
Now, let’s review our previous lesson.
Who among you remember our lesson last meeting?
Anyone from the back ________.
What a memory!
What are the three subatomic particles? _________
Very good idea!
What is the charge carries by proton, electron and
neutron?
Excellent!
To test if you really understood our previous lesson.
Let’s have a short recap. We will have an Activity
entitled “FACT OR BLUFF”. To answer the question, I
will give each of you a two flashcards. If your answer is
True, raise the “FACT” flashcard and if it is False, raise
the “BLUFF” flashcard. I will only read the question
twice.
Did you get it?
1. The atom is composed of subatomic particles
Our previous lesson is all about the Atoms.
The three subatomic particles are proton,
electron and neutron.
The proton carries positive charge, the electron
carries negative charge and the neutron carries
any charge or what we called neutral.
Yes, Ma’am.
BLUFF

4. called proton, electron and nucleus.
2. The proton carries positive charge.
3. The nucleus carries neutral charge.
4. The electron carries negative charge.
5. The neutron carries any charge or zero.
I am grateful that all of you really understand our
previous topic.
FACT
BLUFF
FACT
FACT
C. Establishing a
purpose for the
lesson/ Presenting
examples/instances
for the new lesson
(Engage)
(5 minutes)
Do you want to explore to find some treasures?
Then, let’s have the activity entitled “TEAM-
BUILDING IN TREASURE HUNTING”.
In this activity, there is no competition instead you have
to help each other in order to find the treasure your
looking for and to build what need to be built. Choose
one of your classmate who will come to me to get the
first key towards the treasure. After that, you have to
read what was written in the key, and follow the next
instruction to find the next station until you come to the
treasure’s place.
Did you understand class?
And now let’s begin.
Yes, Ma’am.
Yes, Ma’am.

5. Are you done?
Excellent class! You’ve got the Correct answer.
Based on the activity that you performed what do you
think is our lesson for today?
Anyone?
Precisely! Our lesson for today is all about the
Development of the Periodic Table.
(The students perform the activity)
Yes, Ma’am.
(The students formed the jumbled letters into)
D E V E L O P M E N T
O F
P E R I O D I C
T A B L E
Our lesson for today is all about the
development of the periodic table.

6. Altogether, kindly read the title of our lesson for today. Development of the periodic table.
D. Discussing new
concepts and
practicing new skills
#1 and 2
(Explore)
(15 minutes)
1. Establishing the purpose of the lesson
Before we start with our new lessoon here are the
objectives which are expected for you to achieve at the
end of the discussion.
Please read altogether.
Through inquiry based approach, the students should
be able to…
1. Identify the scientists who contributed to the
development of the Periodic Table.
2. Create a timeline of the history of the
development of the Periodic Table.
3. Acknowledge the important of the development
and need for the periodic table.
a. Pre-Activity
To deepen your understanding about our
lesson this morning, let’s have another activity.
This activity will give you first-hand
understanding about the lesson that we will be
tackling this morning.
b. Setting of Standard
But before we begin our activity, what are the
standards we should follow while doing our
(The students read the objectives altogether)

7. activity?
c. Groupings
Okay class; now let’s have an activity entitled
“FIX ME!” I will divide you into 6 groups.
Each group consist of 5 members.
d. Giving of instruction
I will give each group an envelope containing
materials that you will use in this activity.
What you are going to do is to rebuild the cut
parts of the picture by arranging it towards
the previous arrangement. I will give you only
2 minutes in doing this activity. Did you
understand?
e. Presentation of the Rubrics
I have here the rubric that we will use to rate
your output.
(see rubric sheet)
(Student Possible answers)
- Follow the instruction
- Be cooperative
- Sharing of ideas
- Listen to the teacher
- Minimize the noise
- Be responsible
- Time management

8. Is that clear?
Okay, your time starts now.
2. Activity proper
(See activity sheet)
3. Post-Activity
Your time is up.
Yes, Ma’am.
(The students perform the activity)
(The students paste their works on the board)
E. Developing
mastery (Leads to
Formative
Assessment 3)
(Explain)
minutes)
Let’s check if your answer are correct. Let’s begin with
the group 1.
Is group 1 arranged the cut parts correctly?
Okay let’s give them Good job clap.
How about the group 2? Are they arranged the cut parts
correctly?
Okay let’s give them Good job clap.
How about the group 3? Are they arranged the cut parts
correctly?
Okay let’s give them Good job clap
Yes, Ma’am.
(The students gave the first group Good job
clap.)
Yes, Ma’am.
(The students gave the second group Good job
clap.)
Yes, Ma’am.
(The students gave the third group Good job

9. How about the group 4? Are they arranged the cut parts
correctly?
Okay let’s give them Good job clap.
How about the group 5? Are they arranged the cut parts
correctly?
Okay let’s give them Good job clap.
How about the group 6? Are they arranged the cut parts
correctly?
Okay let’s give them Good job clap.
clap.)
(The students gave the fourth group Good job
clap.)
Yes, Ma’am.
(The students gave the fifth group Good job
clap.)
Yes, Ma’am.
(The students gave the fifth group Good job
clap.)
F. Finding practical
applications of
concepts and skills
in daily living/
Making
generalizations and
abstractions about
the lesson
(Elaborate)
(15 minutes)
1. Discussion of the concept
Have you enjoyed the Activity?
That’s good to hear.
Who do you think are those people?
Thank you. You have an idea.
Now, let’s discuss the Development of the Periodic
table.
Yes, Ma’am.
Those are scientists Ma’am.

10. When you hear the word Periodic Table, what comes on
your mind? Anyone?
What is Periodic Table? Anyone?
Who are the different Scientists involved in the
Development of Periodic Table?
Anyone from the class that you know?
(Students possible answer)
- Elements
- Atomic number
- Atomic mass
- Proton
- Neutron
- Electron
The Periodic table of chemical elements, often
called the periodic table, organizes all
discovered chemical elements in rows (called
periods) and columns (called groups) according
to increasing atomic number. Scientists use the
periodic table to quickly refer to information
about an element like atomic mass and chemical
symbol.
- Johann Dobereiner
- Alexandre-Beguyer de Chancourtois
- John Newlands
- Julius Lothar Meyer
- Dmitri Mendeleev
- Henry Moseley

11. Based on your textbook, whose scientist is this?
What is his contribution to the development of the
periodic table?
Awesome! How about this one, who is he?
What is his contribution to the development of the
periodic table?
Johann Dobereiner
A German chemist who formed the triads of
elements with similar properties like the triad
calcium, barium and strontium, published 1817.
Alexandre-Beguyer de Chancourtois
A Geologist who contribute to chemistry the
“tellurique” (telluric screw), a three-

12. Excellent! How about this one, who is he?
What is his contribution to the development of the
periodic table?
Very Good! How about this one, who is he?
dimensional arrangement of the element
constituting an early form of the periodic
classification, published in 1862.
John Newlands
An English chemist who propose the “law of
Octaves”. He based his classification of elements
on the fact that similar properties could be
noted for every eight elements when they are
arranged in order of increasing atomic masses,
published 1863.

13. What is his contribution to the development of the
periodic table?
Awesome! How about this one, who is he?
Julius Lothar Meyer
Meyer was the first person to recognize the
periodic trends in the properties of elements.
He saw on the atomic volume of an element
plotted against its atomic weight.
Dmitri Mendeleev

14. What is his contribution to the development of the
periodic table?
Awesome! How about this one, who is he?
What is his contribution to the development of the
Discovered the Periodic table (Periodic table as
he called it). While attempting to organize the
elements in February of 1869. He did so by
writing the properties of the elements on pieces
of card and arranging and remaining them until
he realised that by putting them in order of
increasing atomic weight, certain types of
element regularly occurred. Not only did
Mendeleev arrange the element in the correct
way but if an element appeared to be in a wrong
place due to its atomic weights, he moved it to
where it fitted with the pattern he had
discovered. The real genius of Mendeleev’s
achievements was to leave gaps for
undiscovered elements. The element 101
Mendelevium was named after him.
Henry Moseley
A British Scientist who contributed to the

15. periodic table?
Is that clear? Did you understand our lesson? Is there
any question?
Clarifications?
Okay, I will be the one who ask. How many scientists we
discussed?
Who are they? Anyone?
periodic table. Moseley contribution was
changing the basis of the periodic table from
atomic weights to atomic numbers. The used of
atomic numbers helped get rid of many flaws in
the table. Moseley organized the periodic table
according to the protons in the nuclei of atoms,
called their atomic numbers. His new method
did away with many discrepancies the previous
table had. Moseley discovered that the number
of positive charges in the nucleus of an atom, its
atomic number, is a fundamental property of
the element and is responsible for the element’s
characteristics.
None Ma’am.
None ma’am.
There are six scientists Ma’am.
- Johann Dobereiner
- Alexandre-Beguyer de Chancourtois
- John Newlands
- Julius Lothar Meyer
- Dmitri Mendeleev

16. Very good! Whose scientist proposed the “Law of
Octaves?
Great! How about the one who organized the periodic
table according to the protons in the nuclei of atoms,
called their atomic numbers.
Excellent! The element 101 Mendelevium was named
after whom?
Terrific!
2. APPLICATION
Now we will have an activity. I will divide this class
into 3 groups. Each group will perform different task.
Group 1: SINGERS
Make a jingle about the contribution of the 6 scientists
(2 minutes).
Group 2: WRITERS
Make a poem about the contribution of the 6 scientists
(2 stanzas).
Group 3: NEWSCASTER
Make a News Report about the contribution of the 6
- Henry Moseley
John Newlands
Henry Moseley
Dmitri Mendeleev

17. scientists. (3 minutes).
Did you understand?
I have here the rubric that will use to rate your
performance.
(see the rubric sheet)
I will give you 5 minutes to prepare and practice your
task. Your time start now.
Your time is up. Back to your proper seats. And now,
may I call the presence of group 1 to present your task.
Let’s give them Bravo clap.
Group 2 perform your task.
Let’s give them Bravo clap.
Group 3 perform your task.
Let’s give them Bravo clap.
Congratulations everyone. Your performances are
awesome.
3. VALUING
Now, can you give me the brief explanation about what
Yes, Ma’am.
(The students prepare and practice for the
activity)
(The group 1 perform their task)
(The students gave the group 1 a Bravo clap)
(The group 2 perform their task)
(The students gave the group 2 a Bravo clap)
(The group 3 perform their task)
(The students gave the group 2 a Bravo clap)

18. you have understood in this quotation? Anyone?
That’s awesome!
Periodic table has one of the most important
achievements in the field of chemistry. It is full of
patterns that help us to better understand the world
around us.
4. GENERALIZATION
To test if you really understand our lesson, let’s have an
activity entitled “FILL ME UP!” Let me group you in two
groups. Each group will receive the materials that
needed in this activity. What you are going to do is to fill
in what missing in the timeline.
Understand?
I have here the rubric that we will use to rate your
(answer may vary)
Yes, Ma’am.
“THE PERIODIC TABLE IS A MAP
TO THE UNIVERSE, SHOWING THE
ELEMENTS THAT MAKE UP
EVERYTHING AROUND US”
__Master Chemistry__

19. output.
(see rubric sheet)
I will give you 5 minutes to perform the activity. Your
time starts now.
Your time is up. Post your work in front and report it.
Group 1
Give them five claps.
Group 2
Give them 5 claps.
Give yourself a Good job clap.
(The group 1 present their work)
(The students perform the clap)
(The students perform the clap)
G. Evaluating
Learning
(Evaluate)
(5 minutes)
Direction: Get ¼ sheet of paper. Read the questions
carefully and choose the letter of the correct answer.
Write it in a separate sheet of paper.
1. When the development of the Periodic Table
could be traced back?
a. 1888
b. 1864
c. 1856
d. 1817
D

20. 2. Who’s not belong to the scientists who
contributed to the development of the periodic
table?
a. Dobereiner,
b. Meyer
c. Mendeleev
d. Isaac Newton
3. Who proposed the “Law of Octaves”?
a. Johann Dobereiner
b. John Newlands
c. Lothar Meyer
d. Dmitri Mendeleev
4. What was Dmitri Mendeleev’s greatest
contribution to the history of the periodic table?
a. He arranges all of the known elements by
their atomic number.
b. He realised that there was a pattern of
reactivity which repeated every eight
elements.
c. He predicted the existence (and properties) of
new elements
d. He identified the “law triads” which became
the groups.
5. What is the important of the development and
need for the Periodic table?
a. To quickly refer to the information about an
element like atomic mass and chemical
D
B
C

21. symbol.
b. An important tool for chemists,
nanotechnologists and other scientists.
c. An important ingredient in cooking some
foods.
d. Both A and B
D
H. Additional
activities for
application for
remediation
(Extend)
(2 minutes)
ASSIGNMENT:
On a 1 whole sheet of paper, make a brief summary
about the scientists who contributed to the development
of periodic table and their contribution.
(To be pass next meeting.)
REFLECTION
REMARKS
Prepared by: Checked by:
IRISH P. DELA CRUZ JENNY LOREN M. ECHANES
Student Teacher Cooperating Teacher

22. RUBRIC SHEET FOR ACTIVITY
CRITERIA 5 3 1
ACCURACY
The arrangement is
organized in a way that
makes sense.
The arrangement is mostly
organized in a way that
makes sense.
The arrangement is
unorganized and attached in
a sloppy manner.
NEATNESS
The activity sheet is very
neat and easy to understand.
The activity sheet is neat and
easy to understand.
The activity sheet is
somewhat neat.
COOPERATION
All members cooperate in
the group activity.
Half of the members are
cooperating with the group.
Least of the members
cooperate.

23. RUBRIC SHEET FOR ACTIVITY
CRITERIA POINTS SINGER WRITERS NEWSCASTERS
PRESENTATION:
Systematically presented and understandable.
Not systematically presented but understandable.
Not systematically presented and not understandable.
5
3
1
COOPERATION:
All members cooperate in the group activity.
Half of the members are cooperating with the group.
Least of the members cooperate.
5
3
1
CONTENT:
Very clearly related to the Topic.
Mostly related to the topic.
Unrelated to the topic.
5
3
1
TOTAL 15

24. LEARNING MATERIALS