Lesson Planning of Bar- graph and Line Graph Subject Mathematics Grade 4th

 

Lesson Planning of Bar- graph and Line Graph

Subject Mathematics

Grade 4^th

Students` Learning Outcomes

• Read and interpret simple bar-graphs given in horizontal and vertical form.
• Read and interpret line graph.

Information for Teachers

• A visual way of recording information, a diagram or drawing representing a collection of data is known as graph. ‘Data means the information that is gathered by counting, measuring, asking questions or observing’.
• A graph using bars to show quantities or numbers so that they can be easily compared is called bar-graph. A bar-graph uses horizontal or vertical bars to represent data.
• In bar-graphs, the widths of all bars are equal and draw at equal distance from each other.
• If the bars are along horizontal axis, then this graph is called “horizontal bar-graph”.
• If the bars are reflected along vertical axis, then this graph is called “Vertical bar-graph”

Horizontal Bar-Graph & 

Vertical Bar-Graph

• In the line graph information are represented by “dots” joining with each other and it is used within period of time.
• In line graph information are continuously represented by dots and these dots are joined by the line segments which show the increase and decrease in the values.

Material / Resources

Writing board, chalk/marker, duster, prepared coloured charts / posters of bar and line graphs, textbook

Introduction

• Show posters or charts of horizontal and vertical bar-graphs and line graphs to the students, like the following, as;
• Explain the data shown in these graphs.

Development

 

Activity 1 Show the following bar-graph in which Adnan`s marks of different subjects in Grade 4th are reflected through vertical bar-graph. Ask students to observe it carefully and complete the table given below. Subjects Obtained marks Mathematics   Science   English   Urdu   Islamiat    Divide the class into groups and ask them to discuss the graph and the table. Ask the groups of students: as; How many marks Adnan obtained in Mathematics? (The expected answer would be as; 50) Mention the highest marks in the graph and also tell the subject. (The expected answer would be as; Islamiat 80) Mention the lowest marks in the graph and also tell the subject. (The expected answer would be as; English 45) From the graph, tell the difference in the marks of English and Urdu. (The expected answer would be as; 25)

 

Activity 2 Show the following line graph in which temperature on different days of Lahore city has been reflected. Ask students to observe it carefully and complete the table given below, as; Ask the students: as; What is the temperature on Tuesday? (The expected answer would be as; 360C) What is the temperature on Wednesday?(The expected answer would be as; 320C) Note: Encourage students on providing appropriate answer. Make the following table on board and complete it with the help of students. Days Temperature Sunday   Monday   Tuesday   Thursday   Friday   Saturday

 

Sum up / Conclusion

• A visual way of recording information, a diagram or drawing representing a collection of data is known as graph. Data means the information that is gathered by counting, measuring, asking questions or observing.
• A graph using bars to show quantities or numbers so that they can be easily compared is called bar-graph. A bar-graph uses horizontal or vertical bars to represent data.
• If the bars are along horizontal axis, then this graph is called “Horizontal bar-graph”.
• If the bars are reflected along vertical axis, then this graph is called “Vertical bar-graph”

Assessment

• What is the purpose of graph?
• What is the difference between Bar and Line Graph?
• What is the difference between horizontal and vertical bar-graph?
• Is width of bars of bar –graph equal?

Follow up

• Draw a graph between of 5 students` marks obtained in Mathematics, writing students` name on horizontal and their marks on vertical lines.
• Assign questions from the textbook.