-
8/6/2019 loci 29 june
1/4
Class : 2 Bestari
Day/Date: Tuesday 29th
June 2010Time : 11.50-1.10 (80 min)
Subject : Mathematics form 2
Learning Area : Loci in 2 Dimension
Objective : Understand and use the concept of 2 Dimensional
loci
Learning Outcome : Students will be able to:1. Describe and
sketch the object the locus a moving object.2. Determine the locus
of points that are of constant distance from a fixed point.3.
Determine the locus of points that are equidistant from two fixed
points.4. Determine the locus of points that are constant distance
from a straight line.5. Determine the locus of points that are
equidistant from two intersecting lines.6. Construct the locus of a
set of all points that satisfy a given condition.
Pre-requisite knowledge : Students have the basic skill learned
from Geometrical Construction.
Teaching and learning approaches : deductive approach,
cooperative learning, problem solving approach,
inquiry-discovery
Teaching aids/technology : whiteboard, manila card, compasses,
ruler, references from Internet.
Values : cooperation
-
8/6/2019 loci 29 june
2/4
Lesson Beginning
TimeAllocation
Students Task/ Activities Role of Teacher Classroom Discourse
Role of TeachingAids/ Technology
5 min . Introduce the locus as apathway taken by the
movingobject.
NOTE 1
Development Phase
TimeAllocation
Students Task/ Activities Role of Teacher Classroom Discourse
Role of TeachingAids/ Technology
10 min The idea of locus in 2 DimensionState the locus of a
moving point.
Describe and sketch the locus of themoving points. Student copy
theexercises into exercise book.
Guide student to state thelocus of a moving point.
Guide students to describeand sketch the locus of themoving
points.
Call volunteers to answer.
Worksheet 1
Worksheet 2(Mahjong Paper)
25 min Determine the locus of points that
are of constant distance from afixed point.
Name the locus of P.
Determine the locus of points thatare equidistant from two
fixedpoints.
Pose example of locus of
points that are constantdistance from a fixed point.
Pose example locus of pointsthat are equidistant from twofixed
points.
Where the possible
positions of point P when itmoving 3 cm from a fixedpoint O?
What the locus of point Qmoves such that it isalways equidistant
frompoint E and F?
NOTE
NOTE
-
8/6/2019 loci 29 june
3/4
Name the locus of QDetermine the locus of points that
are constant distance from astraight line.
Name the locus of S.
Determine the locus of points thatare equidistant from
twointersecting lines.
Name the locus of R.
Pose the example of locus of
points that are constantdistance from a straight line .
A point R moves such that it isequidistant from
intersectinglines AB and CD.
Moving point S such that it
3 cm from line RT.
NOTE
NOTE
20 min Activity 1Form a group of 6. Each group willbe given a
set of questions thatallowed them to construct the locus.
Construct the locus of a set of all
points that satisfy a given condition.
Students construct the locus by usingcompasses and ruler.
Prescribes the steps toconstruct the locus of a set of all
points that satisfy a givencondition.
Mahjong paper
15 min Present the answer in front of theclass.
Discuss the solution of questions.
Discuss either they usedappropriate scale.Discuss either they
namedthe locus with the correctanswer.
Mahjong Paper
-
8/6/2019 loci 29 june
4/4
Lesson Ending
TimeAllocation Students Task/ Activities Role of Teacher
Classroom Discourse Role of TeachingAids/ Technology
5 min Students need to complete theexercise 9.1C from
textbook.
Recap the whole lessons
Reflection
