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Ratios Created by Cristina Salas Leal November 20, 2007.

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Presentation on theme: "Ratios Created by Cristina Salas Leal November 20, 2007."— Presentation transcript:

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2 Ratios Created by Cristina Salas Leal November 20, 2007

3 Objective The students will gain an understanding of ratios and proportional relationships. TEKS(6.3A) Patterns, relationships, and algebraic thinking. The student solves problems involving ratios to describe proportional situations.

4 Math Journal Take a few moments to write the questions and answer them. What is a ratio? Describe a situation where ratios are used.

5 What is a ratio? A Ratio is a comparison between two things. Example - 3 apples to 4 oranges

6 Ways to write a ratio Words – 2 lollipops to 3 cookies Colon – 2:3

7 Ratios Clarissa has 4 blue marbles and 2 green marbles. What is the ratio of blue marbles to green marbles? 4 blue marbles to 2 green marbles; 4:2 What is the ratio of green marbles to blue marbles? 2 green marbles to 4 blue marbles; 2:4

8 Ratios Eric has a jar filled with gumballs. In the jar there are 15 white gumballs, 20 blue gumballs, 10 yellow gumballs, 12 red gumballs and 8 green gumballs. What is the ratio of yellow gumballs to blue gumballs? 10 yellow to 20 blue 10:20

9 Internet Websites SpyGuys created a lesson on Ratios Click here - LearnAlbertaLearnAlberta Watch Lesson 3 – Ratios Answer the questions and read along

10 Thank You

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