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All About Fractions

All About Fractions. Standard 2.G.3. Equal Parts . To be a fraction, a shape must have EQUAL parts. Equal parts means that all parts are the same size. Do these shapes show equal parts? Why do you think so?. One Half.

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All About Fractions

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  1. All About Fractions Standard 2.G.3

  2. Equal Parts • To be a fraction, a shape must have EQUAL parts. Equal parts means that all parts are the same size. Do these shapes show equal parts? Why do you think so?

  3. One Half • Think about when your parents say you get to eat half of an apple. How much of the apple do you really get? • What does half mean? • Half means you get one part out of two EQUAL parts. • That means you would split the apple into 2 EQUAL parts and you would get one part

  4. One Half • What does this fraction look like? • 1/2 or Do these fractions show 1/2? Remember, for it to show 1/2, the shape has to be split into 2 EQUAL parts and one of those parts needs to be shaded in. 1 2

  5. One Third • Think about what you learned about one half. What do you think one third means? • It means one out of three parts. • That means, a shape is split into three EQUAL parts and one of the three parts would be shaded in.

  6. One Third • What does this fraction look like? • 1/3 or • Do these fractions show 1/3? Remember, for it to show 1/3, the shape has to be split into 3 EQUAL parts and one of those parts needs to be shaded in. 1 3

  7. Other Thirds • What do you think two thirds looks like? • 2/3 or • What would a shape look like if two thirds of the shape was filled in? • The shape would be split into thirds (three EQUAL parts) and two of the three parts would be shaded in. • Do these show 2/3? 2 3

  8. One Fourth • Think about what you learned about one half and one third. What do you think one fourth means? • It means one out of four parts. • That means, a shape is split into four EQUAL parts and one of the four parts would be shaded in.

  9. One fourth • What does this fraction look like? • 1/4 or Do these fractions show 1/4? Remember, for it to show 1/4, the shape has to be split into 4 EQUAL parts and one of those parts needs to be shaded in. 1 4

  10. Other Fourths • Two fourths • 2/4 or : The shape is split into 4 EQUAL parts and two of the parts are filled in. • Three fourths • 3/4 or : The shape is split into 4 EQUAL parts and three of the parts are filled in. • Do these shapes show 2/4, 3/4, or neither? 2 4 3 4

  11. One Whole • Think about if you say I’m going to eat the whole apple. What would you eat? • One whole means that the entire shape is filled in. With the fractions we have learned, one whole would look like this: • Two halves: 2/2 • Three thirds: 3/3 • Four fourths: 4/4

  12. Equal parts don’t have to have same shape • The fractions are the same no matter what shape the fraction is, as long as the whole shape is the exact same. • Example: These both show 1/2 and the size of the fraction is equal, even though the shape looks different. • These both show 1/4 and the size of the fraction is equal, even though the shape looks different.

  13. Key Terms Fraction Equal parts Halves Thirds Fourths A half of A third of A fourth of One whole One half Two halves One third Two thirds Three thirds One fourth Two fourths Three fourths Four fourths

  14. Review One half – 1/2 Two halves – 2/2 One third – 1/3 Two thirds – 2/3 Three thirds – 3/3 One fourth – 1/4 Two fourths – 2/4 Three fourths – 3/4 Four fourths – 4/4 One whole – 2/2, 3/3, 4/4

  15. Check what you’ve learned! • What are these fractions? 2/4 1/4 3/3 2/3 2/3 4/4 1/2 3/4

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