Mathematics - Junior Secondary 2 - Statistics (continued)

Statistics (continued)

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TERM: 3RD TERM

WEEK 8

Class: Junior Secondary School 2
Age: 13 years
Duration: 40 minutes of 5 periods
Subject: Mathematics
Topic: Statistics (Continued)
Focus: Collecting, Tabulating Data, Graphical Presentation

SPECIFIC OBJECTIVES:
By the end of the lesson, pupils should be able to:

  1. Collect data from local sources.
  2. Tabulate data and present it in graphical form (pie chart).
  3. Interpret the data and state its usefulness in everyday life.
  4. Understand the importance of graphical data representation in decision-making.

INSTRUCTIONAL TECHNIQUES:
• Question and answer
• Guided demonstration
• Practical exercises (hands-on data collection and analysis)
• Real-life application

INSTRUCTIONAL MATERIALS:
• Graph paper
• Pie chart templates
• Whiteboard and markers
• Example data sets
• Worksheets

PERIOD 1 & 2: Data Collection from Local Sources and Tabulation
PRESENTATION:

Step

Teacher’s Activity

Pupil’s Activity

Step 1 - Introduction

Explains the importance of collecting data from local sources such as community events, school activities, etc.

Pupils listen and suggest local data collection sources.

Step 2 - Explanation

Demonstrates how to collect local data (e.g., the number of books in a library, daily attendance in school, etc.).

Pupils collect data based on a chosen topic.

Step 3 - Tabulation

Shows how to tabulate the collected data.

Pupils tabulate the data in tables.

Step 4 - Practice

Guides pupils in organizing and tabulating their collected data.

Pupils organize and tabulate their collected data.

EVALUATION (5 exercises):

  1. Collect data on the number of people at school today.
  2. Tabulate the data.
  3. Interpret the tabulated data.
  4. Identify any trends or patterns in the data.
  5. Present the findings to the class.

CLASSWORK (5 questions):

  1. Collect data on the number of books in a school library.
  2. Tabulate the data collected.
  3. Interpret the tabulated data and explain the results.
  4. Discuss the use of data tabulation.
  5. Present the findings in groups.

ASSIGNMENT (5 tasks):

  1. Collect data on the number of students in different classes at your school.
  2. Tabulate the data.
  3. Identify trends in the data.
  4. Write conclusions based on the data.
  5. Discuss the importance of data collection in the real world.

 

PERIOD 3 & 4: Plotting Pie Charts and Interpreting Data
PRESENTATION:

Step

Teacher’s Activity

Pupil’s Activity

Step 1 - Introduction

Introduces the concept of interpreting data presented in pie charts.

Pupils listen and discuss the usefulness of pie charts in understanding data.

Step 2 - Explanation

Demonstrates how to plot pie charts using local data.

Pupils follow along with the teacher to plot pie charts.

Step 3 - Interpretation

Guides pupils on how to read and interpret information from pie charts.

Pupils interpret pie charts and discuss findings.

Step 4 - Practice

Pupils plot and interpret pie charts using their own collected data.

Pupils plot pie charts based on their data and interpret the results.

EVALUATION (5 exercises):

  1. Plot a pie chart based on your tabulated data.
  2. Interpret the pie chart and identify the highest and lowest sections.
  3. Discuss the usefulness of pie charts for interpreting data.
  4. Write a conclusion based on your pie chart.
  5. Present your interpretation of the pie chart to the class.

CLASSWORK (5 questions):

  1. Plot a pie chart for the data: {5, 10, 15, 20}
  2. Identify the largest section of your pie chart.
  3. Write an interpretation of the pie chart.
  4. Discuss how pie charts can be used in real-life decision-making.
  5. Share your findings with the class.

ASSIGNMENT (5 tasks):

  1. Collect data on favorite colors of 10 people.
  2. Tabulate the data.
  3. Plot a pie chart for the data.
  4. Write a brief interpretation of the pie chart.

Discuss the importance of graphical data representation in everyday life.