Definitions

Venn Diagrams creates a visual set

Set – any collection of objects

Universal Set – is the set that contains all elements being considered in a given discussion.  

 

Symbols used in Venn Diagrams

U – union two sets being brought together 

 - Intersection occurs when items are determined to be in both sets.  Think of the intersection as a covered bridge that connects two towns.  

 

Review of worksheet Problem Solving:  Collect and Use Data 

 

    (Have students take notes throughout the lesson using pg. 8 to create the     

               example problem)

 

 Ask the students the question that is on the worksheet.  Create a roster from the student’s information.  Encourage discussion about the topic and the student’s interest.  

 

                Likes Skating        Likes biking           Likes both 

 

Draw each set and record the results from the class.  Explaining each step as the teacher builds the Venn Diagram.   Use the same questions on the worksheet    #7-11 and answer the questions on the board.  

 

Answer any questions that the students might have about the example problem.

Then distribute the worksheet to the students to complete pg. 7 independently.  

Students will also complete pg. 10 problems 1-4