WBSED - 6 - Maths :: Ratio and Proportion

Go To: WBSED-Mathematics-Grade 6

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[Contributor - Poornima Menon]

Objective: To learn and apply the concepts of ratio and proportion

Subtopics to be covered:

1. Introduce the use of ratios in daily life
2. Conversion of numbers into a ratio
3. Identify whether the numbers are in proportion

Learning Outcome:

1. Students can form a ratio for given set of numbers
2. Students can arrange and identify numbers in proportion

[Contributor - Rini Jose]

Hindi Medium

[Contributor - Kripa S]

https://www.youtube.com/watch?v=9XbOop1YecQ (Similar triangles -example for ratio)

[Contributor - Kripa S]

http://study.com/cimages/videopreview/4qfs3doxw6.jpg (what is ratio)

http://www.edpax.com/media/managed/large/ratio_proportion_2nd_41.png (ratio example 1)

http://www.rpdp.net/mathdictionary/english/vmd/images/e/equivalentratios.gif (ratio example 2)

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTHyX4m1veFeiPuZymoJGrmR8_G1Hi8qZKBzfUE66geuwYD0ry0 (proportion example 1)

https://image.pbs.org/poster_images/assets/PROPORTION.jpg.resize.710x399.jpg (proportion example 2)

https://www.mathsisfun.com/algebra/images/proportion-1a.gif (proportion with numbers)

http://images.tutorvista.com/cms/images/113/equivalent-ratios.png (equivalent ratio)

[Contributor - Kripa S]

1. In a class, there are 20 boys and 40 girls. What is the ratio of the number of boys to the number of girls?

2. Saurabh takes 15 minutes to reach school from his house and Sachin takes one hour to reach school from his house. Find the ratio of the time taken by Saurabh to the time taken by Sachin.

3. In a school, there were 73 holidays in one year. What is the ratio of the number of holidays to the number of days in one year

4. Measure the length and breadth of your classroom. What is the ratio of length to breadth ? Now check the ratio of length to breadth of your notebook. Are the two in same proportion ?

[Contributor - Rima Mitra]

https://drive.google.com/open?id=0BzNF2YyqQxJ-V0VGNFNlSDBxTDQ

[Contributor - Rima Mitra]

https://drive.google.com/open?id=0BzNF2YyqQxJ-MXhnN1dJcnNqREU

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