Calidad percibida en los consumidores de pisco

BIG IDEA Collection and Organization of Data

CURRICULUM EXPECTATIONS

Students will:

• read primary data presented in concrete graphs, pictographs, line plots, simple bar graphs, and other graphic organizers (e.g., tally charts, diagrams), and describe the data using mathematical language;

• gather data to answer a question, using a simple survey with a limited number of responses (e.g., What is your favourite season?; How many letters are in your first name?);

• collect and organize primary data (e.g., data collected by the class) that is

categorical or discrete (i.e., that can be counted, such as the number of students absent), and display the data using one-to-one correspondence in concrete graphs, pictographs, line plots, simple bar graphs, and other graphic organizers (e.g., tally charts, diagrams), with appropriate titles and labels and with labels ordered appropriately along horizontal axes, as needed.

MATERIALS

– small paper bags, each containing 5 small gift items (1 bag per group of 3 students); inexpensive gift items, such as party favours, colourful pencils, small toys, and stickers, can be purchased at dollar stores. Alternatively, use pictures cut from CO2.BLM1a–b: Gift Items, instead of actual gift items.

– chart paper

– CO2.BLM2: Graph Template (1 per group of 3 students) – sheets of lined paper (1 per group of 3 students)

– CO2.BLM3: Survey Questions (1 per student)

ABOUT THE MATH

Data management activities often require students to conduct a survey. Students need to recognize that surveys involve more than asking the same question of every classmate and creating a graph with the survey results. Instead, they should understand that surveys provide a means for collecting information from a group of people, and that this information provides a basis on which decisions can be made. It is important that students see that the ways in which this information is displayed in graphs can help in decision making.

GRADE 2 LEARNING ACTIVITY: COLLECTION AND ORGANIZATION OF DATA

In this activity, students conduct a survey with a purpose: to help a company make decisions about which items to put in party bags. They create graphs using the data collected in the survey and make recommendations to the company managers.

GETTING STARTED

Explain the following scenario to the class:

“The Party Pack Company sells small gift bags for special celebrations, such as holidays, weddings, and birthdays. These gift bags contain a few treats to eat and a few little presents. People buy the bags to give to their guests as a special gift. “The Party Pack Company’s managers are planning to create small gift bags for children’s birthday parties. They want to put gifts in the bags that children will really like. So here is how you can help them: they would like you to collect data that will help the company managers decide which gifts to include in the bags.”

Show students sample gift bags. Explain that the company managers have put five small gifts into each sample bag, but that they want to include only three of the five gifts in a bag. Tell students that the class will conduct a survey to determine which three gifts in each sample bag are the most popular. After collecting data from the survey, groups will present their findings.

WORKING ON IT

Divide students into groups of three. Provide each group with a bag containing five small gift items. Then complete the activity:

• Have each group conduct a survey by showing the five gift items to each of their classmates individually and asking them to choose their favourite item. (The survey should involve all classmates.)

• Ask groups to record the results from the survey (e.g., by keeping their own tally chart).

• Have each group discuss the findings from the survey (e.g., using their tally chart). • Ask each group to create a graph on CO2.BLM2: Graph Template to show the results

of the survey. Groups may choose not to use CO2.BLM2: Graph Template to create their graph.

• Finally, have each group write a letter, on a sheet of lined paper, to the managers of the Party Pack Company, explaining its findings and recommendations.

Observe the processes used by students to collect and organize data, and provide guidance when needed. After students have gathered data, ask them questions, such as the following:

GRADE 2 LEARNING ACTIVITY: COLLECTION AND ORGANIZATION OF DATA

• “How did you know if you asked all students your survey question? • “How did you record information gathered in the survey?”

• “What do the survey results show?”

• “How can you create a graph that shows the results of your survey?”

• “What will you explain to the managers of the Party Pack Company about the results of your survey? What will you recommend?”

Provide time for groups to complete their graphs and write their letters. Record the following outline on the board or chart paper to assist students in writing their letters.

REFLECTING AND CONNECTING

Gather students together. Begin the discussion by having different groups explain how they conducted the survey and recorded survey results. After discussing the methods used by students, ask:

• “How did a survey help you collect the information you needed?”

• “What are important things to think about when you conduct a survey?” • “How can you keep track of who has answered the question and who has not?” • “What are good ways to record survey results?”

• “If you were to conduct the survey again, what would you do differently? Why?”