Ratios By Edith Henderson Beech Springs Intermediate School Grade 5 http://www.spart5.k12.sc.us/
What is a ratio? A ratio is two numbers that are used to compare two quantities.
Three Ways To Write Ratios • 1/3 • 1 to 3 • 1:3
Where Can We Find Ratios? • Recipes • Food labels • Classrooms • Scale Drawings
Let’s Make A Ratio What is the ratio of pairs of white tennis shoes to pairs of black tennis shoes? Write the answer in three ways.
Let’s Make A Ratio “Answer” White pairs of tennis shoes = 5 Black pairs of tennis shoes = 4 Ratio is 5/4 or 5 to 4 or 5:4.
Black and White Shoes • What is the ratio of white to black shoes? • What is the ratio of black to white shoes? • What is the ratio of black shoes to all shoes?
Trivia Games What is the ratio of games won by Sean to games won by Sonia on Day 3?
Standards Addressed:Data Analysis and Probability • Formulate questions that can be addressed with data and collect, organize, and display relevant data to answer them. • Compare data sets collected in different ways to address a given question.
Graphics Courtesy Of: • www.animfactory.com