This lesson plan teaches students how to calculate the mode of grouped data. It begins with a review of measures of central tendency. Students will then participate in an activity called "TikTok MODE" to understand modal class. The lesson will present the formula to find the mode of grouped data: Mo = Lmo + (Δ1/ Δ1+ Δ2) i, where Lmo is the lower limit of the modal class, Δ1 is the difference between the modal class frequency and the previous class frequency, Δ2 is the difference between the modal class frequency and the next class frequency, and i is the class interval size. Students will practice applying the formula to sample frequency distribution tables and solve an assignment calculating measures of central

1. Department of Education
Division of City Schools
San Carlos City, Pangasinan
TURAC NATIONAL HIGH SCHOOL
Turac, San Carlos City, Pangasinan
A SEMI-DETAILED
LESSON PLAN
IN MATHEMATICS 7
Prepared by:
LILIBETH DG. SORIANO
Subject Teacher
Corrected by:
MARLENE E. MORALES
KATHERINE E. BAUTISTA
Cooperating Teachers
AURELIA M. FERRER
Master Teacher I
ELEANOR M. LAO
Head Teacher III
Noted:
ROGELIO P. DE GUZMAN, Ed. D.
Principal II
Date of Teaching: April 15, 2020

2. Semi-Detailed Lesson Plan In Mathematics 7
MODE OF GROUPED DATA
ContentStandard
Demonstrates understandingof key concepts, usesand importance of Statistics, data
collection/gatheringand the different forms of data representation, measures of central
tendency, measures of variability, and probability.
Performance Standard
To be able to collect and organize data systematically and compute accurately measures of
central tendency and variability and apply these appropriately in data analysis and interpretation
in different fields.
Learning Competency
Calculates the measures of central tendency of ungrouped and grouped data. (M7SP-IVf-g1)
I. Objectives
Students are expected to do the following duringand at the end of the class:
A. recall the formula in solving the mode of grouped data;
B. apply the formula in finding the mode of grouped data; and
C. show interest in the subject by actively participatingin class discussion.
II. Subject Matter
A. Topic: Mode (Grouped Data)
B. References
1. Books: Alagano, R. F. et. al. 2015. Mathematicsfor the 21st Century
Learners. Diwa Learning System, Inc. pp. 333-336
Oronce, O. A. et. al. 2013. e- Math 8 (Kto12). Rex Book Store, Inc.
pp. 421-424
2. Electronics:
https://www.youtube.com/watch?v=YNMcNuS9vbQ&feature=youtu.be
C. Materials: Laptop, marker, whiteboard, visual aids, tape measure and envelope
D. Values Integration: Enhanced Participation
III. Procedure
A. Review
Before starting the lesson, teacher will conducta short review of the previous lesson
by asking the following questions:
1. Measures of central tendency is one of the tools you can use to interpret the
data you collected, what is the use of measures of central tendency?
2. What are the three measures of central tendency?
B. Activity
“TikTok MODE”
 The teacher will call 3 volunteered students who are expertor has high
interest in TikTok. Each student I called will performtheir best TikTok
performance live at classroom. After they performed, the class will vote/
follow the student by raising their finger heart. The studentwho received
more finger hearts fromtheir classmates or who got the highest
votes/followerswill be the winner or will be called the modal class.
C. Analysis
The following questions will be used as the guide questions for the activity.

3. 1. What do you notice fromthe activity?
2. How will you describe the distribution?
D. Presentation of the Lesson
The lesson will start by presenting the lesson objectives and asking the question:
“How will you find the mode of the given data if the number of data is very large?”
E. Abstraction
To find the mode of a grouped data use the formula:
𝑀𝑜 = 𝐿 𝑚𝑜 + (
∆1
∆1+ ∆2
) 𝑖
Where:
Lmo- the exact lower limit of the modal class
D1– the difference between the frequency of the modal class and that of the
frequency before the modal class
D2− the difference between the frequency of the modal class and that of the
frequency after the modal class
i – the size of the class interval
F. Generalization
To assure the learnings of the students, the following questionswill be asked.
1. How will you describe the mode?
2. How will you find the mode of the given data if the number of data is very large?
3. What is the formula in finding the mode of grouped data?
4. How will you know which class does the mode located?
5. Can you give me some practical application of the mode?
G. Application
(“Waist-to-Floor Measurements”)
 The teacher will group the class into two. Each group will be given an
envelope which contains problem and the materials they need for the
activity. Each group will be given 5 minutes to answer their problem. After
that, two representatives for every group will go in front and will discusson
how they solved their problems.
 RUBRICS
 Understanding of the Task - 20%
 ProblemSolving - 40%
 Presentation - 40%
IV. Assessment
Find the value of Lmo, ∆1, ∆2, i, and mode of the frequency distributiontables below.
1.
Monthly Salary (Thousands
of Pesos)
Frequency Class Boundaries
11-15 12 10.5-15.5
16-20 10 15.5- 20.5
21-25 8 20.5- 25.5
26-30 5 25.5-30.5
Lmo = _______ ∆2 = _______ Mo = _______
∆1 = _______ i = _______

4. 2.
Age Frequency Class Boundaries
21-23 22 20.5- 23.5
24-26 25 23.5- 26.5
27-29 28 26.5-29.5
30-32 31 29.5- 32.5
33-35 34 32.5- 35.5
36-38 37 35.5- 38.5
V. Assignment
Given the frequency distribution tablebelow, find the following:
X F Cumulative Frequency ClassBoundaries
10 – 14 5 5 9.5 – 14.5
15 – 19 6 11 14.5 – 19.5
20 – 24 7 18 19.5 – 24.5
25 – 29 8 26 24.5 – 29.5
30 – 34 9 35 29.5 – 34.5
1. Mean __________
2. Median group __________
3. Median __________
4. Modal group __________
5. Mode __________
Lmo = ________ ∆2 = ________ Mo = _______
∆1 = ________ i = _______