Lesson 10. Direct Proportion | Maths Session for Grade 09

About DP Education
The DP education was born out of the passion of Mr. Dhammika Perera to provide an innovative online math learning platform for school students to enhance their math skills. School students can access the government math curriculum from grades 6-13 at their own convenience for free.

DP Education (in English)
Students who wish to learn Math can watch the video and learn the subject at their convenience. Here math is taught in an easy way and in simple language.
You can also watch and learn math in Sinhala and Tamil languages by clicking to the links below.

CHAPTER DESCRIPTION (in this video)

This video is a lesson on Direct Proportion - Grade 9.
By studying this lesson you will be able to
• identify direct proportions,
• solve problems related to direct proportion using the unitary method,
• solve problems related to direct proportion using the definition,
• write the relationship between two directly proportional quantities in the form y = kx,
• solve problems related to the conversion of foreign currencies using the knowledge on direct proportions.

Maths can not be learnt if you leave in between the class. So, we have provided break in between our online class at regular intervals.

Please go through the previous chapter on Liquid Measurements here

Please go through the next chapter on First Term Revision Exercise here

You can ask your doubts and any questions related to this chapter in the message section below, and our teacher will reply back at the earliest. Also, do attend our live QnA Sessions, which are conducted from time to time, and we post the announcement on our social media platforms.

The link is given below:-

You can also visit Mr. Dhamikka Perera's Youtube channel to know more about his vision on DP Education and the initiative at

For our graduate, postgraduate and upskilling students, we also provide a large number of free courses from various prestigious universities across the world through our website:

Our Motto is "Learn what you love" and we will work hard to make learning enjoyable for you.

#DPEducation #Grade9MathsEnglish #Proportion

[irushilokuumagiliyage]

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[nethunamaraweera]

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[niroshanbandara]

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[usithaarya]

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[kasunfernando]

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Thankyou so much madam..

[dumindapunchihewage]

Thank you very much madam teaching is perfect

[shifafawas]

My maths book was not at ll complete and i suddenly got to know about dp education. Thankyou somuch for having well trained teachers to teach best teaching. THANKYOU FOR MAKING SUCH A GREAT ONLINE EDUCATION PLATFORM IN THIS CURRENT SITUATION WHICH IS MUCH NEEDED

[manoriratnasekara]

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[miardzubair]

wow miss. This is a big help for all the grade -9 students. keep it up miss

[iranganisenevirathne]

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[michellenaicker]

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This helped me so much for my exams and its all because of you 😀😀😄

[bangtanhansimeth]

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This helped me so much for my exams and its all because of you ❤❤

[sithmiabewickrama]

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[omalmadusanka]

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[warunarathnayaka]

Thank you teacher . I really appreciate your great service for the well being of the students in Sri Lanka .

[poojithayasanga]

This video help me to cover the 10th lesson easily. Thank you so much madam

[dinidusathkumara]

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[oushanamaluddeniya]

i did t know about this lesson very well so i go through the dp education and i get the lesson. thank you so much teacher. its happy to study with teacher like you

[udayanganikumari]

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[sunethranilmini]

Thank you very much teacher...! Great work 👍