Khan Academy Exercises and Videos

Mutual Funds

2026-04-16T19:10:57.989381

Get a clear and simple understanding of Mutual Funds with easy explanations and practical examples. This video breaks down key concepts to help you build a strong foundation in investing. In this video, you’ll learn: • What Mutual Funds are • What an AMC (Asset Management Company) does • The concept of Diversification • What NAV (Net Asset Value) means • Example 1 and Example 2 for better clarity • What SIP (Systematic Investment Plan) is • Benefits of investing in Mutual Funds Whether you're a beginner or looking to revise the basics, this video will make Mutual Funds easy to understand.

Shares and Dividend

2026-04-16T19:10:57.989381

Completely understand the concept of Shares and Dividends with a relatable example. In this video, you’ll learn: ✔️Promoters and Limited Company ✔️Shares ✔️Stock Exchange ✔️Face Value and Market Value ✔️At Premium, At Par, At Discount ✔️Sum Invested ✔️Dividend and ✔️Rate of Return (ROR) Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/mr-class-10 Timestamps: 0:00 - Introduction 0:34 - Promoters and Limited Company 1:18 - Share 1:38 - Stock Exchange 1:58 - Face Value and Market Value 2:29 - At Premium, At Par, At Discount 3:41 - Sum Invested 3:59 - Dividend 4:54 - Rate of Return (ROR) 5:20 - Example

Introduction to GST

2026-04-16T19:10:57.989381

Understand the complete concept of GST (Goods and Services Tax) in a simple and practical way! In this video, you’ll learn: ✔️ What is GST ✔️ Old vs New Tax System ✔️ GSTIN Number & its Format ✔️ Components of GST (CGST, SGST) ✔️ GST Calculation ✔️ How to Read a Real Invoice/Bill 💡A must-know real-life Maths concept for exams and daily use! Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/mr-class-10 Timestamps: 0:00 - Introduction 1:19 - Earlier tax System 1:39 - One Nation One tax 1:58 - GSTIN 2:50 - Format of GSTIN 3:20 - How GST is Calculated? 3:55 - Components of GST 4:30 - Reading Invoice

Solved Examples on GST and ITC

2026-04-16T19:10:57.989381

Practice GST & ITC with this solved examples video! In this session, we solve two important questions step by step to help you understand how GST works in real-life scenarios and how Input Tax Credit (ITC) is applied. This video will strengthen your concepts and improve your problem-solving approach. By the end, you’ll feel more confident in applying GST and ITC in exams and practical questions. Perfect for revision and concept clarity!

GST and ITC in Trading Chain

2026-04-16T19:10:57.989381

Completely understand the concept of Trading chain and ITC (Input Tax Credit )with a relatable example. In this video, you’ll learn: ✔️ What is Trading Chain ✔️ Example of Trading Chain ✔️ How ITC is calculated ✔️ Various financial transactions ✔️ Composition Scheme ✔️ Rules for composition dealers ✔️ Features and Types of GST

Brokerage and Taxes on Share Trading

2026-04-16T19:10:57.989381

Build a clear understanding of brokerage and taxes in share trading through simple, real-life examples. In this video, you’ll explore: who share brokers are, what brokerage means, the formulas for buying and selling shares with practical applications, and how taxes are applied to brokerage.

Income Tax

2026-04-16T18:20:36.435889

Learn how to compute Income Tax step by step with simple explanations and shortcut methods to save time. This video is perfect for beginners who want clarity on tax calculations. In this video, you’ll learn: • What Gross Income is • Understanding Deductions • How to calculate Taxable Income • Explanation of Tax Slabs • Step-by-step Income Tax Calculation • A Faster Way to Calculate Tax • Tax Slabs for Senior and Super Senior Citizens

Direct and Indirect Tax

2026-04-16T18:20:36.435889

Build a strong foundation in taxation with this simple and easy-to-understand video. Perfect for beginners who want clarity on basic tax concepts. In this video, you’ll learn: • Introduction to Tax • Types of Tax • What Income Tax is • Key Terms: Assessee, Financial Year (FY), and Assessment Year (AY) • What PAN is and why it is important

Savings and Investments

2026-04-16T18:20:36.435889

Understand the basics of managing money with this simple and clear explanation of savings, investments, and risk. In this video, you’ll learn: • Introduction to Savings • What Investment and Returns mean • The relationship between Risk and Returns

Solved example: Ohms law - Resistance

2026-04-15T05:40:45.550331

Solved example Ohms law

Additive and multiplicative identity

2026-04-10T11:00:33.591018

In this video, we explore the important concepts of additive identity and multiplicative identity in whole numbers. You’ll learn why adding zero to any whole number leaves it unchanged, making 0 the additive identity, and why multiplying any whole number by one gives the same number back, making 1 the multiplicative identity. With simple examples and clear explanations, we show how these identities form the foundation of arithmetic and make calculations consistent and reliable.

Multiple Lines of Symmetry

2026-04-10T11:00:33.591018

Discover the fascinating world of symmetry in this engaging video on multiple lines of symmetry! We begin by examining a kite — a shape with just one line of symmetry — and then dive into a hands-on paper folding activity to explore how squares and rectangles reveal their symmetrical secrets. Watch how each fold uncovers a new line of symmetry! Next, we explore other geometric figures like the hexagon, which boasts of several lines of symmetry, and understand what makes these shapes so perfectly balanced. Finally, we guide you through drawing a figure with two lines of symmetry, helping you visualize and create symmetrical designs with precision and creativity.

Reproduction in Algae

2026-04-06T04:23:10.940252

Algae grow pretty much everywhere – water, soil, rocks, sea, wood and even on animals through symbiotic relationship. But what makes them ubiquitous is that they reproduce by different modes of reproduction. This video explores and describes the different reproduction methods in algae.

Classification of Phylum Nematoda

2026-04-06T04:20:34.811205

In this video, we look at the classification of helminthic worms into two classes. This is based on the presence or absence of the posterior glandulo-sensory organ, the Phasmid.

Phylum Nematoda

2026-04-06T04:20:34.811205

In this video, we explore the fascinating world of Phylum Nematoda – the round worms of the world. The first organisms to evolve organ system level of organisation & sexual dimorphism, which reproduces only sexually. They are responsible for some of the worst parasitic infections all over the world. What helps them be such an expansive parasite? Let’s find out. #Grade11 #Year1 #KhanAcademy Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now!

Classification of the Phylum Platyhelminthes

2026-04-06T04:20:34.811205

When we think of flatworms, we think of Tapeworm, a parasite. But did you know, not all Platyhelminthes are parasites? While some are free-living hunters, others have evolved complex life cycles involving multiple hosts and specialised "hooks" to stay attached to the host. In this video, we break down the Classification of Phylum Platyhelminthes, comparing their body morphology to reproduction.

Units of weight measurement [Bangla Video]

2026-04-05T08:11:15.223815

This video focuses on understanding different units used to measure weight and how to convert between them. Students will learn common units such as grams and kilograms, compare quantities, and apply appropriate conversions in real-life contexts.

Finding the area of a parallelogram [Bangla Video]

2026-04-05T08:11:15.223815

This video explains how to find the area of a parallelogram. It demonstrates step-by-step how to use the base and height to calculate the area with clear examples.

Metric System: Units of Volume – 2 (liquids) [Bangla Video]

2026-04-05T08:11:15.223815

This video explains the units of volume in the metric system, focusing on commonly used measurements and their relationships. It helps learners understand how to convert between different volume units and apply them in practical contexts with clear examples.

Measurement word problem: seating arrangement in a gallery [Bangla Video]

2026-04-05T08:11:15.223815

This video explains how to solve measurement-based word problems related to seating arrangements in a gallery. It demonstrates how to interpret given dimensions, count seating capacity, and apply basic mathematical reasoning to determine how many people can be accommodated in a given space.

Uses and Disadvantages of Friction

2026-04-17T11:25:36.000000

Let's solve some questions on uses and disadvantages of friction

Cyclones

2026-04-17T05:52:39.000000

Learn how cyclones form, what makes them dangerous, and how to stay safe when nature roars.

Winds

2026-04-17T05:50:02.000000

Explore how winds form, how they behave, and how they shape weather around us.

Histogram, Frequency Polygon, Pie Chart

2026-04-16T18:35:21.000000

In this exercise, students will learn to analyze and interpret data presented in various graphical formats, including Histograms, Frequency Polygons, and Pie Charts

Area of a circle

2026-04-16T15:22:29.000000

Find the area of a circle given its radius, diameter, or circumference.

Comparing probabilities

2026-04-16T15:10:57.000000

Practice expressing probabilities in different forms (fractions, decimals, and percents).

Experimental probability

2026-04-16T15:09:53.000000

Practice making reasonable estimates of the likelihood of future events based on past experience.

Equivalent ratios in the real world

2026-04-15T21:32:39.000000

This exercise goes beyond solving for equivalent ratios and gets at what it means for ratios to be equivalent.

Probability and relative frequency: foundations

2026-04-15T21:00:24.000000

Probability and relative frequency: foundations

Quadratic formula

2026-04-15T18:45:33.000000

Solve quadratic equations using the quadratic formula. For example, solve -9x+10x²+8=14.

Linear vs. exponential growth: from data

2026-04-15T18:32:12.000000

Given a table with values of two quantities over time, determine whether the quantities form grow linearly or exponentially.

Systems of inequalities graphs

2026-04-15T18:18:40.000000

Find the graph that represents the solution to a system of inequalities.

Sequences and domain

2026-04-15T18:08:45.000000

Given the first few terms of a sequence, practice identifying recursive definitions with different indexes that produce the sequence.

Apply: the carbon cycle

2026-04-15T17:55:53.000000

Apply your understanding of the carbon cycle in this set of free, standards-aligned practice questions.

Convert recursive & explicit forms of geometric sequences

2026-04-15T15:51:31.000000

Given the explicit formula of a geometric sequence, find its recursive formula, and vice versa.

Linearization and proportional reasoning

2026-04-15T15:48:33.000000

Apply your knowledge of linearization and proportional reasoning in this set of free practice questions.

Constant of proportionality from graphs

2026-04-15T15:40:36.000000

Practice identifying the constant of proportionality from graphs.

Connecting linear and rotational motion

2026-04-15T15:35:28.000000

Check your understanding of rotational kinematics in this set of free practice questions.

Function notation word problems

2026-04-15T15:32:48.000000

Interpret expressions with function notation in terms of the context that the function models.

Strategy in solving quadratics

2026-04-15T14:47:06.000000

Practice determining which method(s) for solving a quadratic equation are applicable based on the initial form of the equation.