ALM LESSON PLAN - I
DATA
HANDLING
|
Name of the Student –
Teacher :
T. Nikshaya.
Name of the
school : SriRamakrishna
SaradaHigher Secondary school.
Subject :Mathematics
Class :VII
Topic :Data
Handling
Unit : Collecting
and organizing of
Continuous Data
Duration : 45 minutes.
Date :
27-08-18
|
General Instructional
objectives
The
pupils,
i.
acquire the knowledge of data handling
ii.
understand the concepts of collecting and
organizing of continuous data
iii.
apply the concepts of data to solve the
problem
iv.
acquire mathematical skills and appreciate
the beauty of mathematics
Specific Instructional
Objectives
The
pupils
i.
recall the basic knowledge of the data
handling
ii.
define collection of data
iii.
explain the types of data
iv.
describe frequency and range
v.
give some examples for finding the range
by using the formula
Teaching learning
Material
1)
Chart
2)
Flash Card
Introduction
Evocation
Data Handling is a part of
statistics. The word statistics is
derived from the latin word “Status” live Mathematics, statistics is also a science
of number. The numbers referred to hare
are data expressed in numerical from like,
1)
Marks of students in a class.
2)
Weight of children of particular age in
a village.
3)
The amount of rainfall in a region over
a period of years.
Activity
1)
Collect the data of the birth moths of
your classmates.
2)
Collect the maths marks in your
classmates.
Recall
The teacher recall the basic knowledge of
data handling.
Data
Any collection of information in the form
of numerical figures giving the required information is called data.
Raw Data
The marks obtained in mathematics test by
the students of a class is a collection of observations gathered
initially. The information which is
collected initially and presented randomly is called a raw data.
The raw data is an unprocessed and
unclassified data.
Grouped Data
Some
time the collected raw data may be huge in number and it gives us no
information as such. Whenever the data is large, we have to group them
meaningfully and then analyse.
The data which is arranged in groups or
classes is called a grouped data.
Activity
1)
List out the different kinds of plants /
trees in your school campus.
2)
Tabulate different kinds of crops
cultivated by the farmers in a village.
Today, we are going to see about the
collecting and organizing of continuous data.
Survey
We are going through the topic from page
no 89,90.
Understanding
Collection of Data:
The initial step of investigation is the
collection of data. The collected data
must be relevant to the need.
Primary Data
For example, Mr. Vinoth the
class teacher of standard VII plans to take his students for an excursion. He asks the students to give their choice
for.
1)
particular location they would like to
go
2)
the game they would like to play.
3)
the food they would like to have on
their trip.
For
all these, he is getting the information directly from the students. This type of collection of data is known as
primary data.
Secondary Data
Mr.Vinoth,
the class teacher of standard VII is collecting the information about weather
for their trip. He internet, news
papers,magazines, television and other sources.
These external sources are called secondary data.
Collecting and Organizing of Continuous Data
Variable
As far as statistics is concerned the word
variable means a measurable quantity which takes any numerical value within
certain limits.
Few examples are 1) age,
2) income, 3) height and 4)
weight.
Frequency
Suppose we measure the height of students
in a school. It is possible that a
particular value of height say 140cm get repeated. We then count the number of
times the value occurs. This number is
called the frequency of 140 cm.
The number of times a particular value
repeats itself is called its frequency.
Range
The different between the highest value
and the lowest value of a particular data is called range.
Teacher solving the
problem:
Let the heights (in cm) of 20 students in a
class be as follows, find range.
120,122,127,112,129,118,130,132,120,115,124,128,120,134,126,110,132,121,127,118,
Sequential Skill
Here the least value is 110cm and the
highest value is 134cm.
Range = Highest value – Lowest value
=134-110
=24
Arithmetic skill
Simple
subtraction
Individual solving
the problem:
The teacher gives a problem to be solved
by the student independently steps are explained and doubts are clarified and
students followed the steps given by the teachers.
Let
the weight (in kgs) of 20 students in a as follows.
35,40,37,42,43,37,39,44,46,44,41,39,34,32,33,36,38,32,37,43.
Soln
Range
= highest value – lowest value
Highest
value = 46
Lowest
value = 32
Range
= 46-32
=14
Group work
·
For group activity, the teacher divides
the class in small group of 5 to 6 students of hexageneous learning skills
·
Challenging problems are to be given
·
Teacher should clarify the doubts of the
studentorally as well as by writingon the board
·
Teacher should monitor the work of every
group
Write
the frequencies of the heights of the 15 students as follows.
120,122,125,120,120,125,122,126,125,126,125,126,122,120,121,121,120.
Soln
1)
Frequency of 120 is 5
2)
Frequency of 122 is 3
3)
Frequency of 126 is 3
4)
Frequency of 126 is 2
5)
Frequency of 121 is 2
Frequency
of all student’s heights
=5+3+3+2+2
=15
=No of students.
Large work
Find
the range and write the frequencies of 25 students mathematics marks in a class
be as follows.
70,75,77,80,80,89,95,97,98,89,99,100,100,99,77,76,75,75,95,98,89,70,77,97,70.
Soln
Highest value = 100
Lowest value = 70
Range
= Highest value – Lowest value
=100-70
=30
Frequencies
of 70,75,76,77,80,89,95,97,98,99,100
1)
Frequency of 70 is 3
2)
Frequency of 75 is 3
3)
Frequency of 76 is 1
4)
Frequency of 77 is 3
5)
Frequency of 80 is 2
6)
Frequency of 89 is 2
7)
Frequency of 95 is 2
8)
Frequency of 97 is 2
9)
Frequency of 98 is 2
10)
Frequency of 99 is 2
11)
Frequency of 100 is 2
Frequency
of 25 students marks
=3+3+1+3+2+3+2+2+2+2+2
=25
=No. of students.
Summarizing
·
From each group one average learner has
to present the solution of the problem.
·
Teacher should answer whether every
student has solved the problem in his note.
·
Preparation should be alone by students
in cyclic order so that everyone will get a chance to present.
Evaluation
Fill in the blanks
1)
The collected information is
called------
2)
------ data means the raw data which has
just been collected from the original
source.
3)
------ data consists of second hand
information which has already been collected.
4)
The number of times a particular value
repeats itself is called its ------
Reinforcement
1)
The difference between the highest and
lowest value of the variable in the given data is called.
a)
Frequency.
b)
Class limit.
c)
Class interval.
d)
Range.
2)
The marks scored by a set of students in
a test are 65,97,78,49,23,48,59,98.
The
range for this data is.
a)
90
b)
74
c)
73
d)
75
Home Assignments
Collect
the data on the student’s favourite animal.
Provide a rubric explaining the type of information you want them to
collect, such as animal size at birth and in adulthood, natural habitats, food
sources, life spans and physical attributes.
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Guide-Teacher’s Student-Teacher’s Signature Signature
Its very useful for us to prepare a lesson plan by rajalakshmi
ReplyDeleteIt us easily refer alm to writing
ReplyDeleteIt's help to write ALM method
ReplyDeleteIt's help to write ALM method
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