Understanding Ratio Tables and Applications

This video tutorial introduces sixth-graders to ratio tables, explaining how to complete them and use them to solve problems. It covers four examples: completing ratio tables with pens and pencils, calculating sugar needed for a hummingbird feeder, determining sodium content in crackers, and mixing paint colors. The lesson emphasizes using both addition and multiplication methods to find equivalent ratios. Students are assigned problems from their textbook and reminded to complete their exit slip and prepare for the next class.

What is the main objective of the lesson on ratio tables?

• To study geometry

• To understand algebraic expressions

• To make ratio tables and use them to solve problems

• To learn about fractions

In Example 1, what is the ratio of pens to pencils?

• 3 to 1

• 1 to 3

• 1 to 2

• 2 to 3

How do you find the missing value in a ratio table when given 9 pencils?

• Subtract 3

• Add 3

• Divide by 3

• Multiply by 3

In the more complex ratio table problem, what is the equivalent ratio of 4 to 6?

• 10 to 15

• 6 to 8

• 8 to 12

• 12 to 18

What method can be used to find equivalent ratios in Example 2?

• Multiplication

• Addition

• Division

• Subtraction

How many cups of sugar are needed for 20 cups of water in the sugar-water mixture?

• 7 cups

• 6 cups

• 5 cups

• 4 cups

What is the study tip for simplifying the process in Example 2?

• Use subtraction

• Use a calculator

• Combine columns

• Add more rows

In Example 3, what is the sodium content for 15 crackers?

• 90 mg

• 80 mg

• 110 mg

• 100 mg

How much sodium is in 21 crackers according to Example 3?

• 120 mg

• 130 mg

• 140 mg

• 150 mg

In Example 4, what is the ratio of yellow to blue paint?

• 3 to 2

• 2 to 3

• 4 to 3

• 3 to 4