Lesson Plan in Grade 7 ScienceQUARTER: 1TOPICPeriodic Table of
Elements DATE: O!ECTI"ES:At the end of the activities, students
should be able to :1. Identify the elements found in theperiodic
table including its symbols. Atomic number and atomic mass, group
number and period.2. Perform basic means for obtaining and
understanding the information presents in the periodic table.3.
Realie the importance and use of some commonly !no"n elements#E$
IDEAS:1. #he periodic table is a tabular arrangement of the
chemical elements. $rganied on the basis oftheir atomic numbers.
%lements arepresented in order of increasing atomic number.2. #he
ro"s of the table are called periods. #he columns are called group
"ith some of these having names such halogens or noble gases.3.
&mitri 'endeleev is generally credited "ith the publications of
thePeriodic table in 1()*.+. %lements in the same group tend tohave
a shared chemistry and e,hibit a clear trend in properties "ith
increasing atomic number.-. %lements in the same periods sho"
trends in atomic radius, ioniation energy, electron a.nity and
electronegativity.%ATERIALS:1. /isual aids.2. Activity sheets3.
Periodic table of %lementsRE&ERE'CE:Grade 7 Science Learner(s
%od)leLEAR'ER(S ACTI"IT$:A. Routine0. Recall1'otivation2an you
identify these elements3 4 Arrange the scramble letters in each
set.5$ 6 & 7 7 8 % 9 : & $ RR % / I ; 67 % 8 $ : < 2 $ R
8 0 A 2. 6esson Proper1. Present the Periodic #able of %lements and
allo" the students to locate init the elements that are listed
above. Identify this together "ith the atomicnumber, group number
and period of each element.2. 9ave the students "or! on the
activity.7uide =uestions1. &escribe the Periodic #able2. 9o"
are elements arranged in the periodic table3 >hat does this
tellsabout the atomic nature of the elements33. >hat are the
di?erence and similarities of the elements found in thesame period
and group3+. 8ame an element and identify its
use.ASSESS%E'T:Com*lete t+e Table,Element S-mbol.,/inc0, 12,
&e3, %an4anese5,S)lf)rASSIG'%E'T:8ame at least 3 elements that
are very useful in industries. %,plain brie@y about the use of
each.
