Lesson Plan for Junior Secondary 2 - Mathematics - ictorial Presentation Of Data Using Pictogram, Pi

### Lesson Plan: Pictorial Presentation of Data Using Pictograms, Pie Charts, and Bar Charts **Grade Level:** Junior Secondary 2 **Subject:** Mathematics **Duration:** 60 minutes **Topic:** Pictorial Presentation of Data using Pictograms, Pie Charts, and Bar Charts #### Objectives: By the end of the lesson, students should be able to: 1. Understand the concept of data representation. 2. Identify and create pictograms, pie charts, and bar charts. 3. Interpret data presented in pictograms, pie charts, and bar charts. #### Materials Needed: - Whiteboard and markers - Projector and PowerPoint slides - Graph papers - Colored pencils or markers - Ruler - Data sets for practice - Handouts with example problems #### Lesson Outline: 1. **Introduction (10 minutes)** - Begin with an engaging question: "Why do we use graphs and charts to present data?" - Brief discussion on types of data and why representation is important for easier understanding. - Introduce today's topics: Pictograms, Pie Charts, and Bar Charts. 2. **Pictograms (10 minutes)** - Explain what a pictogram is and how it uses pictures or symbols to represent data. - Show examples of pictograms on the projector. - Walk through a simple dataset (e.g., number of fruits) and create a pictogram together on the whiteboard. - Discuss the importance of the key/legend in a pictogram. 3. **Pie Charts (15 minutes)** - Introduce pie charts as a way to show data in proportion. - Display a pie chart example. - Explain how to convert data into a pie chart, including calculating percentages and angles (if necessary, simplify by using non-calculator methods initially). - Step-by-step example: Create a pie chart using a small dataset (e.g., favorite colors of students). - Allow students to practice creating a pie chart using a provided dataset. 4. **Bar Charts (15 minutes)** - Explain bar charts and the difference between horizontal and vertical bar charts. - Show examples of bar charts. - Go through the process of creating a bar chart: identifying variables, scales, and accurately plotting data. - Create a bar chart together on the whiteboard using a different dataset (e.g., number of books read by students). - Provide datasets to students for practice. Students create their own bar charts. 5. **Practice and Activities (10 minutes)** - Distribute handouts with mixed datasets. - Allow students to choose a dataset and draw either a pictogram, pie chart, or bar chart. - Walk around and provide guidance as needed. - Peer review: Let students check each other’s work and discuss any discrepancies. 6. **Recap and Assessment (5 minutes)** - Quick review of what has been covered: types of pictorial representations and their uses. - Ask a few students to explain how they created their charts. - Short quiz or quick exit tickets with a couple of questions on interpreting simple graphs. #### Homework: - Assign students to collect their own small dataset from home or school (e.g., number of pets, favorite foods, daily activities). - Ask them to represent this data using any two forms of graphical representation discussed in class (pictogram, pie chart, or bar chart). #### Extension: - For advanced students, introduce the concept of double bar charts and compare data sets. - Use software tools like Microsoft Excel for an introduction to digital data representation. #### Evaluation: - Monitor student participation during class activities and discussions. - Review the charts created during practice and provide feedback. - Grade the short quiz or exit tickets to assess understanding. - Evaluate the homework assignment for accuracy and creativity in data representation. ### Notes for Teachers: - Be prepared with extra materials in case of quick finishers. - Adapt the datasets to be relevant and interesting to students to increase engagement. - Ensure that all students, regardless of their level, are supported and challenged appropriately.