Login Get started

Class 9 Mathematics - Mega Marathon | Xylem Class 9

Xylem class 9・159 minutes read

The session focuses on learning through live experiences, led by VJR and Sir, with an emphasis on simplifying complex topics and encouraging active engagement. It covers various subjects, including mathematics, ratios, and Pythagorean equations, aiming to reach a wide audience and prepare students for exams.

Insights

Emphasis on learning over games in the live session led by VJR and Sir, focusing on playing and learning.
Detailed explanation of chapter seven in the history book to simplify complex concepts for easy understanding.
Practical teaching methods utilizing song, dance, and interactive engagement to cover various topics and keep the session engaging.
Importance of confidence in exams and sharing knowledge highlighted, encouraging active learning and preparation for exams.

Get key ideas from YouTube videos. It’s free

Recent questions

What is the focus of the live session?
Learning rather than games, with an emphasis on playing and learning.
Who will lead the session?
VJR and Sir will lead the session, ensuring a great learning experience.
How long will the session last?
The session will last four hours, focusing on specific chapters.
What is the goal of the session?
To simplify chapter seven for easy understanding.
How will the session cover various topics?
Through song and dance to keep it engaging.

Related videos

Summary

00:00

"Live learning session with VJR and Sir"

The first batch is starting, promising an exceptional live experience.
The focus is on learning rather than games, with an emphasis on playing and learning.
The session will last four hours, with a concentration on chapter four and plus two chapters.
The history book contains seven chapters, with a special mention of chapter seven.
The aim is to simplify chapter seven for easy understanding.
VJR and Sir will lead the session, ensuring a great learning experience.
The session will cover various topics through song and dance to keep it engaging.
The textbook has five chapters, with a detailed focus on two specific chapters.
The live session was rescheduled due to technical issues, with a request for sharing the link.
The goal is to reach 60,000 viewers, emphasizing the importance of confidence in exams.

17:38

"Ratio in Math: Sharing Knowledge, Learning Together"

Teaching children about the concept of ratio in mathematics, specifically the ratio between APQ and QR being 11:11.
Emphasizing the importance of sharing knowledge and encouraging more people to gather for learning.
Mentioning the upcoming night class and the certainty of questions being provided for students.
Referring to the chapter on parallel lines and equations in the textbook, highlighting the need to study seven chapters.
Clarifying the division of chapters in the textbook, with five from the current edition and two from the previous one.
Discussing the proof of fraud and the plan to provide a video explanation the next day.
Outlining the process of drawing an equilateral triangle with a perimeter of 13 cm, to be explained through a video.
Encouraging sharing of educational content to reach a wider audience and prepare for exams.
Introducing a new song for educational purposes and setting goals for audience engagement.
Teaching the concept of parallel lines and the ratio between different line segments, with practical examples and explanations.

34:45

"Ratio and Identity: Mathematical Mysteries Unveiled"

The identities AE by EC and AE by EC do not exist.
In the fifth chapter, the ratio between AE and EC is discussed.
The ratio between AE and EC is 2:3.
The ratio between AD and DB is also 2:3.
The ratio between AE and EC is 2:3.
The distance from Kozhikode to Malappuram is 2x, from Malappuram to Thrissur is 3x, and from Kozhikode to Thrissur is 5x.
AC is 20, which is 5x, so x is 4.
The profit per man is ₹4.
The teacher discouraged singing and emphasized the importance of studying.
The chapter discusses cutting lines in ratio and parallel lines.

48:18

Engaging Teaching: Triangle Midpoints and Communication Skills

Faisal Sir leads a class, encouraging students to engage and learn actively.
Students are prompted to focus on the triangle ABC, with D and E as midpoints of the sides.
The concept is taught through singing, emphasizing the midpoint of D and E.
Understanding the midpoint is crucial, with DE being parallel to BC.
The length of DE is half that of BC, with specific measurements like 10 cm.
The teaching style involves interactive engagement and practical examples.
Communication skills are highlighted as essential for improvement.
The importance of hard work and consistency in learning is emphasized.
Practical applications of concepts are demonstrated through numerical examples.
The text concludes with a mix of personal anecdotes and educational insights.

01:04:29

"Math Problem Solving and Musical Notes"

The text discusses a math problem involving parallel lines and triangles.
It emphasizes learning to sing notes A, D, and E.
Mentions the importance of understanding the relationship between DE and BC.
Involves solving for the length of QR, which is 7 cm.
Talks about teaching concepts in a live class setting.
Instructs on finding the length of AB when PQ is 10 cm.
Discusses finding the length of AC when QR is 8 cm.
Mentions the importance of breaking a record set by classmates.
Highlights the significance of studying new numbers in a chapter.
Encourages focusing on specific concepts to excel in exams.

01:20:39

Pythagorean Theorem: Solving Right Triangle Equations

A Square plus B squared equals C Square, with the largest side being C.
The discovery of Karnam Karnam Hypnoose is integral to understanding the equation.
To find C Square, simply add the squares of the other two sides.
The Pythagorean theorem is crucial in determining the sides of a right triangle.
Equations involving Pythagoras are common in exams, often with pictures provided.
The trick to finding a side in a right triangle is to add the squares of the other two sides and take the square root.
The importance of recognizing Pythagoras in triangle problems is emphasized.
Subtracting the squares of the smaller sides from the square of the larger side is key in Pythagorean equations.
The three types of Pythagorean equations are explained, highlighting the significance of the theorem.
Understanding the roots of numbers and their multiplication is essential in solving Pythagorean problems.

01:35:05

Mathematical Perimeters and Roots Simplified

The question involves understanding the concept of roots and perimeters in a mathematical context.
Root nine multiplied by the square root of three equals three.
The perimeter of triangle ACD is calculated by adding three, the square root of 18, and the square root of 27.
The perimeter is then simplified to the square root of 18.
The question shifts to finding the perimeter of triangle ABC.
The perimeter of triangle ABC is determined to be one.
The focus then moves to the circumference of the circle AB.
The perimeter of triangle AEF is calculated by adding one, the square root of four, and the square root of five.
The difference between the perimeters of triangles ADE and F is found by subtracting the two values.
The sum of the perimeters of triangles ADE and F is obtained by adding the two values.

01:50:39

Square Root Calculations and Perimeter Formulas

The area of a square is 6 cm square.
To find the length of one side of the square, the square root of 6 cm square is calculated.
The area of a square with a side length of 6 cm is 25 cm square.
The square root of 25 is equal to 5, representing the side length.
If the side length is 4 cm, the square root of 4 cm square is 2, indicating the side length.
For a side length of 6 cm, the square root of 6 cm square is the length of one side.
The perimeter of triangle ABC is calculated by adding the square roots of 5, 6, and 1.
The perimeter is determined to be 1 + √5 + √6 = 1 + 2.23 + 2.45 = 4.68.
A mathematical trick involving adding numbers and subtracting to reveal a chosen number is demonstrated.
The method of finding the square root of numbers like 12, 18, and 32 is explained using mathematical operations.

02:05:59

Mathematical Operations and Theorems Explained Simply

The sequence of numbers starts with four and nine, then includes eight, six, and seven, leading to the answer.
The following two numbers are six and seven, with the larger number being seven squared minus six.
The calculation involves squaring seven and subtracting six, resulting in 49 minus 36, which equals 13.
Single numbers can be manipulated by squaring them, with the example of six squared minus five squared.
The Pythagorean theorem is applied to determine the length of the visible side in a right triangle.
The process involves drawing a right triangle with specific measurements for the base and visible side.
The calculation of six squared minus five squared results in 11, which is the root of 11.
The theorem is further explained with the example of three squared plus one squared equalling 10.
The conversion of fractions to decimals is detailed, emphasizing the placement of zeros based on the denominator.
Practical examples are provided to illustrate the conversion process, ensuring clarity and understanding.

02:22:27

Mathematical Operations and Number Patterns

The number 20 has 10 in it, so don't reduce it to 10 out of 20.
Multiplying 20 with any number results in 100, such as 20 * 5 = 100.
The lesson is from the textbook, specifically from a chapter that was omitted last year.
Multiplying 25 by 4 equals 100, so 25 * 4 = 100.
When multiplying numbers, ensure to write the answer correctly, like 18 = 3 * 6 or 9 * 9.
Understanding the concept of repeating numbers, like 3/9 = 0.3333.
Squaring numbers, such as 3 squared equals 9, or 9 squared equals 81.
Rooting numbers, for instance, the square root of 4 is 2, and the square root of 9 is 3.
To get 9 in two places, multiply 3 by 3, resulting in 9.
Follow the pattern of repeating numbers, like 0.6666, until the bottom nine is reached.

02:39:02

"Mathematical Puzzle: Numbers, Products, and Algebra"

The product of two numbers is 1400, and their sum is 81.
The screen is not showing full, causing a problem for one minute.
The children are asked to understand the product of two numbers, given as 1400 and 81.
The unknown numbers are referred to as X and Y.
The multiplication result in Malayalam is referred to as xy.
The next number is determined by adding one to X and Y.
The product of the next number is calculated by multiplying X and Y.
The calendar question involves taking four numbers and finding their cross product.
The difference between the cross products of the numbers is explored.
Algebra is used to explain mathematical concepts, such as the relationship between numbers in the calendar question.

02:55:31

Algebraic Equations and Multiplication Techniques Explained

X Plus eight ready ready but this calendar No it's just some numbers
Number X is next, add one to X Plus one
If it is downward in the calendar, seven will come X plus seven comes to the bottom
After six comes five, add it here, add five
Example of algebra with X's, X and X Plus, take one and one at a time
Cross is going to pick up the product, X into X Plus Six
X squared plus six X, subtract to find the difference
The difference is the difference and you are X, the difference is five
Study the set, prepare for the exam on Perimeter and area
Multiply numbers step by step, 20 * 10, 20 * 5, 6 * 10, 6 * 5
The concept of X Plus Y and V, study and understand the question

Try it yourself — It’s free.