CONCEPT OF RATIO-meaning o ratio and proportio.pptx

Ratio and proportion

1. Concept of Ratio

2. Mental Computation/ drill Motivation: Look around you. What are the things you find inside the room? Concept of Ratio Preparatory activities

3. Presentation: - count the number of boys and the number of girls inside the classroom. In Mrs. Dela Rosa’s Grade 6 Math class, there are 22 girls and 19 boys. Compare the number of girls to the number of boys and vice versa. - How do you write the comparison of the number of boys to the number of girls using the fraction form? Using Colon? Concept of ratio

4. Mrs. Tan bought 2 bags of mangoes and 3 bags of avocados. All bags had the same number of fruits.

5. Ratio - is a comparison of two quantity. 3 ways of writing ratio by phrase- 3 is to 5 or three is to five By fraction- 3. By using colon 3:5 35

6. Give the ratio of each of the following orally Ratio Using the diagram below, form ratios

7. Generalization: Forming ratio What is ratio? Ratio – is a comparison of two quantity.

8. Ways in writing Ratio

9. Application: Write the ratio of the following. Use the 3 different ways of writing them. There are 10 buses at a station. If each bus has 6 wheels, what is the ratio of buses to wheels? Every quarter each student submits 2 projects in EPP. Give the ratio of projects to quarters? Forming ratio

10. Mother bought a bag of rice and a bag of flour (flour = 3kg and rice = 8kg) The ratio of the mass of the rice to the mass of the flour is ___:___

11. Evaluation Write a ratio for this Eight compared to 28 There are 5 kites to seven boys. In a t-shirt factory, each box contains 3 t-shirts. Give the ratio of box to shirt. In a camping, each boy scout will be given 4 hotdogs. If there are 5 boy scouts, 20 hotdogs will be cooked. Write the ratio?

12. Assignment: form ratio for the following using 3 different ways. 7 to 8 3 t0 5 is equivalent to 6 to 15 Two barangays to 13 348 One boat to 3 people is equal to 6 boats to 18 people 45 members of Glee Club to 30 members of Dance Club. Forming ratio