Circle+Graph

=Circle Graphs- 3rd grade Lesson= Jessica Stanik

===Introduction: At this point, students have learned how to develop a pictograph, a bar graph, and a line graph. Students also have learned how to compare fractions with like and unlike denominators. Now we will apply information learned into developing a circle graph. Our data is based on a transportation survey taken by a first grade class with 20 students.===

Total: 20 students
 * How you get to school? || Number of Students ||
 * Walking || 2 ||
 * Bus || 11 ||
 * Bike || 1 ||
 * Car || 6 ||

Student Learning Objective: Students will learn how to organize data in tables and graphs and make comparisons of data. As a result of this lesson, students will learn how to develop a circle graph.
====//Assessment//: Students will be asked to demonstrate this skill by developing their own circle graph based on new data collected in the classroom. Students will take new data home, and complete a circle graph for homework.==== ====//Initiation:// This lesson will be initiated with the teacher briefly talking about previous graphs the students have made in relation to the transportation data. The teacher will then ask students if they know what a circle graph is. At this point, the students will know how to convert fractions into percentages.==== ====//Lesson Development:// The lesson will begin with the students converting the data into percentages as a class. The first step would be setting the data up into fractions (2/20 students walk to school, 11/20 students take the bus to school, 1/20 students bike to school and 6/20 students are transported by car). Then, the data would be converted into decimal and then percentages.====
 * How do you get to school? || Number of Students in Fraction || Decimal || Percentage ||
 * Walking || 2/20 || .10 || 10% ||
 * Bus || 11/20 || .55 || 55% ||
 * Bike || 1/20 || .05 || 5% ||
 * Car || 6/20 || .30 || 30% ||

====As a tool, the teacher will use a SmartBoard and give students the opportunity to go up to the board and work out the conversion problems. Then, the teacher would discuss with them how these numbers can be presented in a graph. The teacher will then model to the class how to make a pie graph. Using the approximate percentages, the teacher will divide a circle into the appropriate proportions. For example, he/she would begin with the largest percentage, in this case Bus with 55%. After, the teacher would ask the class how much of the pie would 55% be close to. Assuming that a student may estimate 50%, the teacher would show that she needs to fill a little more than half of the graph to represent 55%. From this point, the teacher would allow the students to volunteer shading the rest of the circle graph on the SmartBoard. The teacher will also explain to the students how different colors can be used to represent different data.====





====//Closure:// After the students complete the circle graph as a class, the teacher will discuss how circle graphs are another way of representing data. The teacher will then take suggestions for another simple survey question, such as "What kinds of pets does your family own?" The class will collect the data together, and record it. The students will then be asked to convert the data into percentages, and produce a circle graph for homework====