Rates and Unit rate

Rates and Unit Rate

module 6.2

NMR Middle School​

By Suad Gabrie handal

​

​Reviewing prior knowledge

​

Ratio:

A comparison of 2 quantities by division.

Ex: a to b, a:b, a/b

​

The number of dogs compared to the number of cats in an apartment complex is represented by the model shown.

​

EX: 1 to ​3, 1:3 , 1/3

​

​

​

Open Ended

A. What is the ratio of boys to girls in this picture?

B.What is the Ratio of Boys to all kids in this picture ?

express the ratios as a simplest fraction

​

​What is a rate?

Is a ratio that compares 2 quantities in different units. finding rates shows how one thing changes in term of another thing. example : If I walk 5 miles in 2 hour, Do you think that I will walk the same miles in 3 hours if I keep the same pace ?

​

What is a unit rate?

Rate that has a denominator of 1.​

Multiple Choice

$$\frac{65\ miles}{3\ hours\ }$$  ​  Is this a rate or a unit rate?

• Rate

• Unit Rate

Multiple Choice

$$\frac{3\ pages}{1\ \min ute}\ \ ​Is\ this\ a\ rate\ \ or\ \ a\ \ unit\ rate?$$  

• Rate

• Unit Rate

Multiple Choice

A rate written as 50 miles per hour is an example of a

• Quantity

• Mass

• Unit rate

• Equivalent Ratio

Pair-Think activity using real world-problem

​with the material that you have in your desk, you have to do the following:

Glue the grocery sale offer on the white sheet

Find the Rate as fraction Remember ​in the top the money and down the quantity​.

Find the Unit Rate and write a complete sentence

​

​

​

Multiple Choice

Sargento cheese slices $2.48 for 10 slices or Velveeta Cheese slices $3.18 for 12 slices Find the unit price for each and choose the better deal?

• Sargento

• Velveeta

Multiple Choice

 When are unit rates useful? Choose the best answer.

• When you want to subtract a number by another.

• When you want to compare prices.

• When you want to multiply one number by another.

• When you want to figure out the probability of a number.

Open Ended

What is my understanding of the lesson today?

Please write your response in a complete sentence(s).