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E:\Working\Focus_Learning\Math_Genius-8\Open_Files\05_Chapter_4\Chapter_4
              \ 06-Jan-2025  Bharat Arora   Proof-6            Reader’s Sign _______________________ Date __________






                                 Learning by Doing





                Objective: Conduct a survey (favourite TV channels, sports, subjects,
                colours, ice cream flavours, hobbies, etc.) and display the result through
                a pie chart

                Materials Required: Chart paper, colour pencils, ruler, scissors and glue
                Procedure:
                   • Divide the class into groups of 3-4 students each and assign a topic to each group for
                   survey.
                   • Ask them to conduct a survey and make a table to note down the responses. Suppose a
                   group conduct a class survey to know the favourite TV channels and note the responses
                   in the following table.

                    Channels              Number of votes     Fraction of total votes  Percentage of total votes
                    News                          3
                    Movies                        4
                    History and nature            6
                    Sports                        5
                    Cartoon                       7

                   • Next, take a strip of thick chart paper, 1 cm wide and divide it into equal-sized rectangles
                   – one for each student in your class. The entire strip represents your whole class or 100%
                   of the votes. On your strip, colour groups of rectangles according to the number of votes
                   each choice is received. Use a different colour for each choice. For example, if 3 students
                   voted for news, 4 chose movies,  6 chose history and nature, and so on. Colour the first
                   3 rectangles green, the next 4 rectangles violet, 6 rectangles grey, etc.



                   • Tape the ends of your strip together, with no overlap, to form a
                   loop with the coloured rectangles inside.
                   • Tape four copies of the quarter-circle template together to form
                   a circle.
                   • Place your above loop around the circle. On the edge of the circle,
                   mark where each colour begins and ends. Remove the loop, and use a ruler to connect
                   each mark you made to the centre of the circle.
                   • Colour the sections of your graph. Label each                Favourite Channels
                   section with the channel’s name and the                     7               News   3
                   fraction of votes that the channel received.        Cartoon   25                 25
                   For example, your circle graph known as a
                   pie chart might look like this.                                                        4
                                                                                                  Movies
                   • Circle graphs in books, magazines, and                   5                          25
                   newspapers are often labelled with per cents.       Sports   25             History and nature   6
                   Add per cent labels to your pie chart.                                                      25



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