Semi-Detailed Lesson Plan in Mathematics for Grade 8
I. ObjectivesK: Discuss median class & modal class from
frequency distribution table, relative frequency;S: Find the median
class & modal class of a given set of data;A: Value the
importance of the learned concept in real-life situations.
II. Subject MatterMeasures of Central Tendency of Grouped
DataReferences: Teachers Module (Module 10) pp. 564-566Learners
Module pp. 523-525
III. ProcedureReviewLets check your assignments last week, about
frequency distribution table. Fill up the table on the board.
Teacher calls students, to solve for range, class size, class
interval, and fill up the frequency and class markcolumn in the
table. One signature will be given for each student who will answer
on the board.
DiscussionAs discussed earlier, the number of pieces of data
that fall into a particular class is called the frequency of that
class. The percentage of a class, expressed as a decimal, is called
the relative frequency of the class. For the class 31-35, the
relative frequency is 0.35. How do you think this value is
obtained? Answer: (frequency/N)
ScoreFrequencyRelative Frequency
46-5020.1
41-4520.1
36-4050.25
31-3570.35
26-3040.2
PracticeComplete the frequency distribution table by finding the
unknown values.ScoreFrequency (f)Class Mark (X)fXLess than
cumulative frequency (
