Comparing Ratios Using Tape Diagram and Double Number Line

Using TWO number lines to describe equivalent ratios

• double number lines

• coordinate plane

• ratio table

• equation

Display of ratio relationships using equal amounts in rectangular shapes or segments

• Bar model

• Tape Diagram

• Double Number line

• Ratio Table

Illustrate numerical relationships using rectangles to represent parts of the proportion.

• Part-Whole Relationship

• Double Number Line

• Two-Point Form

• Tape Diagram

Tags

CCSS.MATH.CONTENT.6.RP.A.3.a

A two-number line model used to represent the relationship between two quantities.

• Ratio Table

• Tape Diagram

• Double Number Line

• Ratio Graph

Tags

CCSS.MATH.CONTENT.6.RP.A.3.a

A comparison of two quantities that uses division.

• Fraction

• Factor

• Ratio

• Multiple

Tags

CCSS.MATH.CONTENT.6.RP.A.1

What is a double number line?

• a mathematical statement of the equality of two math expressions. Uses an equal sign stating two things are equal (=)

• two number lines used when quantities have different units to easily see there are numerous pairs of numbers in the same ratio

• comparison of two quantities

• ratio comparing to one

What is a Tape diagram

• A diagram using scotch tape

• A diagram using duct tape

• A drawing that looks like a segment of tape, used to illustrate number relationships; Also known as a strip diagram, bar model, fraction strip, or length model

• A drawing of a tape dispenser that includes the tape, the tape holder and the desk it is on

The ratio of brownies to cookies is 3:5. If there are 75 cookies, how many brownies are there?

• 15

• 32

• 45

• 60

If 30 kids in the class like grape juice, how many kids like pineapple juice?  Use the tape diagrams to answer.

• 4

• 30

• 70

• 40

In a bag of Jolly Ranchers, the ratio of blue to red is 3 to 4. If I have a 15 blue jolly ranchers, how many are represented in the entire tape diagram?

• 20

• 105

• 7

• 35