EXEMPLAR SCIENCE LESSON PLAN FOR SENIOR HIGH
SCHOOL GENERAL CHEMISTRY 1
Prepared by: MICHELLE D. DE GUZMAN
SDO- QUEZON CITY / NORTH FAIRVIEW HS
I. OBJECTIVES
A. Content Standards
The learners demonstrate an understanding of the structure of an atom and
the formula and the name of compounds.
B. Performance Standards
The learners shall be able to recognize and differentiate atoms, molecules
and ions.
C. Learning
Competencies/ Objectives
Write the LC code for
each
At the end of the lesson, the learners differentiate among atomic numbers,
mass number and isotopes and which of these distinguishes one element from
another. (STEM_GC11AM-Ic-e-17)
Subject Objectives:
1. identify the atomic number and mass number of an
element
2. give the isotopes of the specific elements
3. realize the importance of atomic number in the study of
elements
II. CONTENT
III. LEARNING RESOURCES
A. References
Physical Science for Senior High School
1. Teacher’s Guide pages
2. Learner’s Materials pages
3. Textbook pages
4. Additional Materials from
Learning Resource (LR)
portal
B. Other Learning
Resources
IV. PROCEDURES
pp.17-20
A. Reviewing previous
lesson or presenting the
new lesson
Ask the learners to recall the particles contained in an atom (or the
subatomic particles) and differentiate the particles in terms of location,
charge and relative mass by filling up the table.
PARTICLE LOCATION CHARGE RELATIVE MASS
B. Establishing a purpose
for the lesson
Look at the periodic table. What have you seen in the periodic table of
elements?
EXEMPLAR SCIENCE LESSON PLAN FOR SENIOR HIGH
SCHOOL GENERAL CHEMISTRY 1
Prepared by: MICHELLE D. DE GUZMAN
SDO- QUEZON CITY / NORTH FAIRVIEW HS
C. Presenting
examples/instances of
the new lesson
Given the following symbols, let the students give the name of the element,
its symbol, atomic mass and atomic number.
D. Discussing new
concepts and
practicing new skills
#1
Using the periodic table of elements, ask the learners to fill up the table.
ATOMIC
MASS
NUMBER OF
NUMBER OF
NUMBER OF
NUMBER
NUMBER
PROTONS
ELECTRONS
NEUTRON
49
14 28
89
11 12 52 24
VSX 19 20
E. Discussing new
concepts and
practicing new skills
#2
F. Developing mastery
(leads to Formative
Assessment 3)
To apply the concept of isotopes, ask them to complete the table
containing information about isotopes of hydrogen.
ISOTOPE PROTIUM
DEUTERIUM TRITIUM
(Hydrogen)
Atomic Number 1 1
Mass Number 1 2
Number of
protons
Number of
electrons
Number of
Neutrons
1. What does a mass spectrometer do?
2. How does the mass spectro-meter separate isotopes of different masses?
G. Finding practical
applications of concepts
and skills in daily living
Why are atomic numbers significant in the study of elements?
H. Making generalizations
and abstractions about
the lesson
Let the students complete the following concept map showing the relationship
of these particles:
ATOMS ATOMS
Combine to lose or gain gain of loss of Form electrons to electrons electrons
Form
EXEMPLAR SCIENCE LESSON PLAN FOR SENIOR HIGH
SCHOOL GENERAL CHEMISTRY 1
Prepared by: MICHELLE D. DE GUZMAN
SDO- QUEZON CITY / NORTH FAIRVIEW HS
I. Evaluating learning
Fill up the table below.
NUMBER OF
NUMBER OF
ATOMIC
MASS
NUMBER
NUMBER
24 52
127
NUMBER OF
PROTONS
ELECTRONS
NEUTRON
13 14
34 45
10
J. Additional activities for
application or
remediation
Read and make a report on the discovery of the existence of the electron, proton and
nucleus.
V. REMARKS
VI. REFLECTION
A. No. of learners who earned 80% in the evaluation
B. No. of learners who require additional activities for remediation
C. Did the remedial lessons work? No. of learners who have
caught up with the lesson
D. No. of learners who continue to require remediation
E. Which of my teaching strategies worked well? Why did
these work?
F. What difficulties did I encounter which my principal or
supervisor can help me solve?
G. What innovation or localized materials did I use/discover which
I wish to share with other teachers?