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## Fractions and Rulers

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**Fractions and Rulers**Fractions on a Number Line Reading a Ruler**Rationale**• Construction trades use rules and rulers for measurement. • Standard Rulers are divided into quarters, eighths, and sixteenths. • Precision measurement is the standard for quality work.**Objectives**• Place Fractions on a Number Line • Read a Ruler with halves, fourths, eighths, and sixteenths**Agenda**• Make a Number Line • Reading a Ruler and Practice • Ruler Internet Activities**Creating a Fractional Number Line**• Demonstration – using card strips and markers • Group Practice • Individual Practice**Fractions on a Number Line**Draw a number line and place these fractions between 0 and 1: • ½ and 2/2 • ¼ and ¾ • 1/8, 3/8, 5/8, and 7/8 • 1/16, 3/16, 5/16, 7/16, 9/16, 11/16, 13/16, and 15/16 Make it large enough for you to work with and you may use color markers.**Number Line Discussion Questions**• Do any of the fractions fall on the same place on the number line? Explain your answer? • Where would fractions like: 2/4, 2/8, 6/8, 4/16, or 6/16 fall on the number line? How do we explain this? • What happens to fractions that fall beyond 1 on the number line? Beyond 2? • How many fractions are there on the number line? • Can all the fractions fit on the number line?**Split into Two Groups**• Jigsaw Group • Computer Group • Work on your assignments for 15 minutes and then we will switch groups for the next 15 minutes.**How to Read a Ruler Jigsaw**• Each group will have copies of a 4 different articles. • Each person chooses one of the 4 articles to read. • Share what you read with the group and do the example problems with the rulers. • Complete Practical Problems Worksheet, correct, and review errors.**How to Read a Ruler Internet Tutorial**• Classroom or Computer Laboratory • Log-in and go to the website. • Complete Tutorial and 8-Question Practice. • Complete Practice Sheets, check answers with your group members and make corrections. http://www.manawa.k12.wi.us/LWHS/Staff/Staff/Kelly%20Koller/General%20Tutorials/How%20to%20read%20a%20ruler.htm**Ruler Game**• Finish the Tutorial/practice and handout Practice Sheets. • Click on the Ruler Game at the bottom of the screen. • Play the game until directed to stop.**Closure Exit Ticket**On the index card: • Name or describe one activity that we did today that helped you to understand the mathematics and explain why you think it helped you. • Name or describe one activity that you did not find helpful and would rather not do again.