Third Term Lesson Note for Week
Class: Basic 5
Subject: Mathematics
Topic: Data Presentation (Frequency Table)
Duration : 80 minutes
Period : Double Periods
Reference Book :
- Progressive Mathematics for Upper Primary Schools.
- Lagos State Unified Schemes of Work for Primary Schools, (Primary 4 – 6)
- Online Resources
Instructional Material : Pictorial chart showing tally, frequency table.
Learning Objectives : By the end of the lesson learners will be able to :
i. Explains data Presentation
ii. Describe frequency, frequency table band tally
iii. Worked examples involving Frequency tables using tally mark
Previous Knowledge : Learners are familiar with Grouping of numbers using strokes
Content :
Frequency is the total number of tally marks for each score.
Frequency Table is a table that shows or present information in a meaningful way for easy analysis.
Tally: is a stroke used in analyzing data in a group of 5s. There are 4 strokes and 1 across them. E.g.
Tally Frequency
III 3
IIII 5
IIII III 8
Example 1:
There are 30 children in a class. The teacher asked them to choose their best colours among Green, Blue, Red and Yellow. The choices of the children are placed in a table called frequency.
Colour Tally Frequency
Green IIII IIII 9
Blue IIII IIII I 11
Red IIII 4
Yellow IIII I 6
From the frequency table above:
Blue colour has the highest frequency ( number of children) = 11
Red colour has the lowest frequency, which is = 4
Example 2 :
In a class of 40 pupils, the marks obtained in a test are shown below:
9 8 7 7 6 5 5 4 7 3
6 3 6 8 7 4 3 4 3 1
2 4 1 5 2 6 9 9 8 6
3 4 6 2 3 7 6 3 6 6
1. Prepare a frequency table for the data using tally marks.
2. Which of the scores has the lowest frequency?
3. Which of the scores has the highest frequency?
4. If 4 is the pass mark, how many Pupil’s passed the test?
Solution:
1.)
Scores Tally Frequency
1 II 2
2 III 3
3 IIII II 7
4 IIII 5
5 III 3
6 IIII IIII 9
7 IIII 5
8 III 3
9 III 3
From the above frequency table :
2) The lowest frequency is 2. The score with the lowest frequency is 1.
3.) The highest frequency is 9. The score that has the highest frequency is 6.
4.) Those who passed the test are those who scored 4, 5, 6, 7, 8 and 9. Their frequency are 5, 3, 9, 5, 3 and 3.
That is: 5 + 3 + 9 + 5 + 3 + 3 = 28 Therefore : 28 pupils passed the test.
Presentation Steps :
Step 1 : Revision of the previous topic taught with the learners by asking questions.
Step 2 : The teacher introduces the new topic by explaining data presentation (Frequency Table)
Step 3 : He /she worked several examples on frequency and frequency table using tally.
Evaluation :
A.) The scores of 40 Pupils in a Mathematics test in Basic 5 are shown below :
1 5 4 7 8 2 3 1 9 4
3 9 6 4 8 7 7 6 7 5
5 4 6 7 5 9 9 8 1 4
7 1 8 9 7 2 2 7 8 4
1) Prepare a frequency table for these data using tally marks.
2) Which of the scores has the highest frequency?
3) Which of the score has the lowest frequency?
4) How many pupils scores less than 5 marks?
5.) If 5 is the pass mark, how many pupils passed the test?
Conclusion : At the end of the lesson, the learners were able to answer the question correctly while the teacher makes some corrections.