LESSON PLAN IN MATHEMATICS 10
I. OBJECTIVES:
At the end of the period Grade 10 Gonzales students should be able to:
1.
2.
3.
identify percentiles for grouped data
solve the value of the specific percentile for grouped data; and
develop patience and perseverance in finding the percentiles for grouped data.
II. SUBJECT MATTER:
A. Topic: Percentile for Grouped Data
B. Reference: Mathematics 10 Learner’s module (pp.390-392)
C. Instructional materials : Chalk, Chalkboard, manila paper, paper strips, power point
III.METHODOLOGY
A. Pre –lesson presentation


Prayer
Checking of Attendance
 through class beadle
B. Lesson Presentation

Motivation/Review
 Let the students recall the formula in getting the value of the nth quartile and decile for
grouped data.
 Motivational activity “4 pics in 1word”
Call a student to answer a motivational activity.Anyone who could give the correct answer
will be given a prize.
4 pics in 1word

Presentation
Let the students create a sentence or phrase using all the words they have formed
(possible answer: MEASURE OF POSITION THAT DIVIDES A DISTRIBUTIONINTO 100 EQUAL PARTS)
 By applying the previous learning . let the student gues the topic for the day.(answer: Percentile)

Lesson proper:
 Post the formula
 Example #1: Calculate the 65th and 32nd percentile of the Mathematics test scores of 50 students.
 The teacher will post the the data and let the students complete the table by pasting the strips of
papers found under the armchairs.
 The students sitting in the chair where the strip is placed should be the one to paste it to the right
place in the table.A student will be called to answer and explain their work.
Scores
Frequency
46-50
4
41.45
8
36-40
11
31-35
9
26-20
12
21-25
6
SOLUTION
Class
Frequency
Lower boundary
˂cf
46-50
4
45.5
50
41.45
8
40.5
46
Interval

36-40
11
35.5
39
31-35
9
30.5
27
26-20
12
25.5
18
21-25
6
20.5
6
Enrichment: Group activity
 In a group of three, students will be given envelop which contains the data distribution found
below.Each group should select one representative to present and explain their answer on
the board.Each group should be asked to find:
 Group 1:P50
 Group 2; P35
 Group 3: P68
 Rubrics on Group Activity
Criteria
Outstanding
Satisfactory
Developing
Beginning
5 points
4 points
3 points
2 points
The computations are
The computations are
The computations are
The computations are
accurate. A wise use key of
accurate. A use key of
erroneous.show some use
erroneous .do not some
concepts is evident
concepts evident
key of concepts is evident
Mathematical
The explanation is clear ,
The explanation is clear
The
Reasoning
exhaustive or thorough .
Accuracy
explanation
use key of concepts
is
understandable but not logical
Generalization
 Ask a student on how to identify nth percentile of a data.
IV - EVALUATION
Calculate the 10th, 70th, and 94th percentile of the following grouped data.
Class
Interval
110 – 119
100 – 109
90 – 99
80 – 89
70 – 79
60 – 69
50 – 59
f
2
5
10
14
16
10
8
N=65
.
The explanation is
incomplete
inconsistent

Rating
and
V- ASSIGNMENT
Calculate the 15th, 21st, 32nd, 39th, 48th, 56th, 60th, 75th, 87th, and 94th percentile of the
following grouped data.
Class
Interval
f
151 – 160
141 – 150
131 – 140
121 – 130
111 – 120
101 – 110
91 – 100
81 – 90
71 – 80
8
12
6
10
7
11
13
9
4