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GBK Geometry

GBK Geometry. Jordan Johnson. Today’s plan. Greeting Review Asg #62: Ch. 9 Algebra Review Exs . 1-15. Lesson: Scale, Ratio, Proportion Homework / Questions Clean-up. Lockheed Vega / Amelia Earhart. Amelia Earhart 1897-1937 (?). Lockheed Vega. Wiley Post (1898-1935)

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GBK Geometry

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  1. GBK Geometry Jordan Johnson

  2. Today’s plan • Greeting • Review Asg #62: Ch. 9 Algebra Review Exs. 1-15. • Lesson: Scale, Ratio, Proportion • Homework / Questions • Clean-up

  3. Lockheed Vega / Amelia Earhart Amelia Earhart 1897-1937 (?)

  4. LockheedVega Wiley Post (1898-1935) First pilot to fly solo around the world

  5. Lockheed Vega / Wiley Post Wiley Post (1898-1935) First pilot to fly solo around the world

  6. Scale Models • How can we describe the plane’s shape?

  7. Scale Models • Same shape, or different?

  8. Scale Models • Same shape, or different?

  9. Scale Models • How can we describe the plane’s shape?

  10. Ratio & Proportion: Main Concepts • Ratio: The ratio of a to b is a numberthat describes a and b’s relationship. • Proportion:The proportions of a figure are ratios that describe the relationships of its measurements. • Iff two figures have equal proportions……they have the same shape. a and bmust be in the same units This equation is called a proportion, too.

  11. Ratio & Proportion • Notebook proportions: • 2½” x 4” • 3½” x 5½” • 4½” x 6¾” • 5” x 8¼” • 7½” x 10” • 8½” x 12”

  12. Notebook Dimensions

  13. Summary • The proportions of a figure describe its shape. • The area describes its size.

  14. Homework • Asg #63: From Ch. 10, Lesson 1 (pp. 380-384): • Set I Exercises 7-11 (read the paragraph above 7) and 15-17. • Set II Exercises 27-30. • Due Tuesday, 4/9. • Asg #64: Also from Ch. 10 L. 1: • Set I Exercises 1-6. • Set II Exercises 34-40 (if you prefer visuals)or 41-47 (if you prefer music). • Bonus:Both 34-40 and 41-47. • Due Wednesday, 4/10.

  15. Clean-up / Reminders • Pick up all trash / items. • Push in chairs (at front and back tables). • See you tomorrow!

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