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Putting it together with FRACTIONS

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8 diapositives · 337 Views · Aug 30, 2012

Putting it together with FRACTIONS. Michele Webb. Introduction . Fractions! What are they? Why do we have to know how to use them? In this lesson you will learn why fractions are important in everyday life. You will also learn about different occupations that depend on the use of fractions.

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  1. Putting it together with FRACTIONS Michele Webb

  2. Introduction • Fractions! What are they? Why do we have to know how to use them? • In this lesson you will learn why fractions are important in everyday life. You will also learn about different occupations that depend on the use of fractions. • Find any relevant background and interest of the audience. • Practice simple calculations with fractions.

  3. Agenda 9:00-9:05 What are fractions? 9:05-9:20 Why do we need fractions in everyday life? 9:20-9:30 Occupations that use fractions 9:30-9:40 Class discussion on previous work with fractions in and out of the classroom. 9:40-10:00 Practice fraction calculations

  4. What are fractions? • Parts of a whole? • Numbers less than 1? • Fractions are ways to “divide up”a whole number. • Essential part of mathematics • How do we add and subtract these things called fractions? • How do we multiply and divide these things called fractions?

  5. Why on Earth do we need these things called fractions? • What are some things people do each day that requires the use of fractions? • What are some jobs that need fractions? • Has anyone used fractions before in a job? • Do you feel comfortable using fractions? Are there any specific reasons why or why not?

  6. Topic One- Adding and Subtracting Fractions • Explain details • Give an example • Exercise to re-enforce learning Examples: 1/3 + 2/3 = 3/3 = 1 4/5 + 6/5 = 10/5 = 2 2/3 – 3/5 = 10/15 – 9/15 = 1/15 1/6 + 3/12 = 2/12 + 3/12 = 5/15

  7. Topic Two-Multiplying and Dividing Fractions • Explain details • Give an example • Exercise to re-enforce learning Examples: 2/3 * 3/2 = 6/6 = 1 ¾ * 2/4 = (3 * 2) / (4*4) = 6/16 = 3/8 (1/5) / (1/2) = (1/5) * (2/1) = 2/5 ¾ / ½ = ¾ * 2/1 = 6/4 = 3/2 = 1 ½

  8. Summary • We have learned about ways fractions are used in everyday life by people of all different types of situations. • We have discussed and practiced how to do simple calculations with fractions.