This is my sample lesson plan for Fourth Year students.
Lesson Plan
LESSON PLANI. Learning Objectives
A. Given the available learning resources, the learners should
be able to:1. identify the atomic mass and atomic number of an
element;2. understand the concepts of mass defect and binding
energy;3. compute for the mass defect, binding energy and binding
energy per nucleus of an element or isotope; andB. 4. answer 3 out
of 5 questions correctly.
II. Subject MatterA. Topic/Concepts1. Atomic mass is mass of an
atom.2. Atomic number is the number of protons in an element.3.
Mass defect is the difference between the mass of the atom and the
sum of the masses of its constituent parts. Mass defect can be
calculated by using the equation below.m = [Z(mp + me) + (A-Z)mn ]
matomwhere:m = mass defect (amu)mp = mass of a proton (1.007277
amu)mn = mass of a neutron (1.008665 amu)me = mass of an electron
(0.000548597 amu)matom = mass of nuclide (amu)Z = atomic number
(number of protons)A = mass number (number of nucleons)4. Binding
energy is defined as the amount of energy that must be supplied to
a nucleus to completely separate its nuclear particles (nucleons).
It can also be understood as the amount of energy that would be
released if the nucleus was formed from the separate particles.
Binding energy is the energy equivalent of the mass defect. Binding
energy can be calculated by multiplying the mass defect by the
factor of 931.5 MeV per amu. Binding energy can be calculated by
the equation below.
B. Materials1. Periodic table of elements2. Atomic CardsC.
References1.
http://physics.bu.edu/~duffy/sc546_notes10/mass_defect.html,
retrieved July 20, 20142. Hewitt, P. (2006). Conceptual Physics.
Florida: Pearson Education, Inc.
III. Learning TaskA. Routine Activities1. Greetings/Prayer2.
Review3. MotivationB. Pre-Activity Discussion1. Unlocking
Vocabularies Atomic mass Atomic number Nucleon Proton Neutron
Electron2. Discussion of Activity ProcedureC. Activity Proper1.
Performance of the activity The students will be grouped into 4.2.
Data gathering Each group will be given 5 cards containing an
element. The learners are going to take down the elements atomic
number and mass number.ElementMass Number(A)Atomic Number(Z)No. of
protonsNo. of neutrons
D. Post Activity1. Analysis of data-gathered Calculate for the
mass of the elements subatomic particles, i.e., the sum of the
masses of the nucleons, the proton, electron and neutron. Use this
formula [Z(mp + me) + (A-Z)mn ]. Compare the atomic mass and the
sum of the atomic masses of the substituents of the element. Solve
for the difference of the masses and label it m. Calculate for the
amount of energy that must be supplied to a nucleus to completely
separate its nuclear particles (nucleons) using Einsteins famous
equation 2. Generalization
IV. Assignment/Enrichment/Follow-upA. Short Quiz1. The energy
that must be supplied to break the nucleus apart into its
constituent protons and neutrons is calleda. Rest energyb. Nuclear
energyc. Binding energyd. Potential energy2. The difference in mass
of the atom from the mass of its constituents is calleda. Mass
defectb. Atomic massc. Mass differenced. Mass-energy equivalent3.
The force that binds protons and neutrons within the nucleus isa.
Gravitational forceb. Weak nuclear forcec. Strong nuclear forced.
Electromagnetic force4. In special theory of relativity of
Einstein, mass is equivalent toa. Energyb. Inertiac. Speed of
lightd. None of the above5. The binding energy of isa. 6.718 MeVb.
7.718 MeVc. 8.718 MeVd. 9.718 MeV
