Ratio and Proportion

Ratio and Proportion

by Immanuel Reodique

​Learning Objectives:

At the end of the lesson, you will be able to:​

1. express one value as a fraction of another given their ratio and vice versa.

2. ​define and illustrate the meaning of ratio and proportion using concrete and pictorial models.

​Prayer

​​Father God,

Come with us today.

Fill our hearts with joy.

Fill our minds with learning.

Fill our classrooms with peace.

Fill our lessons with fun.

Fill our friendships with kindness.

Fill our school with love.

Amen.​

Reminders

1. ​Check your area and dress appropriately

2. Keep your video on

3. Mute your microphone

4. Use the raise hand button when you want to say something

5. Be respectful

6. ​Do not take screenshots

7. Always be on time

8. Enjoy!

​Do you remember how to simplify fractions?

Multiple Choice

Simplify the fraction by reducing it to lowest term.

$$\frac{6}{10}$$  

• $$\frac{3}{5}$$  

• $$\frac{2}{5}$$  

• $$\frac{6}{10}$$  

• $$\frac{12}{20}$$  

Multiple Choice

Simplify the fraction by reducing it to lowest term.

$$\frac{4}{18}$$  

• $$\frac{2}{3}$$  

• $$\frac{3}{5}$$  

• $$\frac{2}{9}$$  

• $$\frac{1}{4}$$  

Multiple Choice

Simplify the fraction by reducing it to lowest term.

$$\frac{9}{24}$$  

• $$\frac{2}{3}$$  

• $$\frac{5}{8}$$  

• $$\frac{2}{9}$$  

• $$\frac{3}{8}$$  

How do we simplify fractions?

In Mrs. Marin's class there are 20 boys and 25 girls. Compare the number of boys to the number of girls.

​Compare the number of vowels to the number of consonants in the word, MATHEMATICS.

Let's try this!

Fill in the Blanks

Write the ratio in word form:

9 leaves to 7 flowers

Fill in the Blanks

Write the ratio in colon form:

9 leaves to 7 flowers

Fill in the Blanks

Write the ratio in fraction form:

9 leaves to 7 flowers

Fill in the Blanks

Write the ratio of the number of cats to the number of dogs in colon form.

Fill in the Blanks

Write the ratio of the number of cats to the number of dogs in word form.

Open Ended

In how many ways we can write a ratio and what are they?

Multiple Choice

Which of the following is the correct way of expressing the ratio, 4 balls to 6 marbles in colon form?

• $$\frac{2}{3}$$  

• 4 is to 6

• 2 : 3

Multiple Choice

Which of the following is the correct way of expressing the ratio, 4 balls to 6 marbles in fraction form?

• $$\frac{2}{3}$$  

• 4 is to 6

• 2 : 3

Multiple Choice

Six notebooks to eight pens in its simplest form is _______.

• $$\frac{2}{3}$$  

• 6 : 8

• 3 : 4

Multiple Choice

Given the picture, which of the following is the ratio of papaya to mango in simplest form?

• $$\frac{2}{4}$$  

• 1 : 2

• 2 : 1

Multiple Choice

Given the picture, which of the following is the ratio of papaya to mango in simplest form written in word form?

• 2 is to 4

• 1 is to 2

• 2 is to 1

Asynchronous Activities​

​1. Watch DepEd TV Episodes 1 and Episode 2

​2. Answer the activities and pre-test posted in your Google Classroom.

​3. The test link will be closed at 5:00 pm

​4. Do not share neither the soft copy of the test nor the link to other sections, as it might give them an advantage over you.

​5. Sharing the test to other sections or to your classmates is strictly prohibited, and it is also considered as cheating.