# Mathematics - Class X Resources

The following list of online resources are provided as a sample of curated resources. New resources shall be added as we come across interesting and relevant online materials.

#### 1. Exponents and Square Roots

Description: This web link contains a video that explains the concept and relation between radical and exponents.

Link: Video on exponents and square roots

#### 2. Simplifying Square Roots

Description: This web link contains a video lesson which explains simplifying square roots in a simple way.

Core Concepts: X-A1   Simplifying square roots.

Link: Video on simplifying square roots

Description: This web link contains a video lesson which explains simplifying square roots in a simple way.

#### 4. Introducing Matrices

Description: The web link contains a video lesson on matrices and part of matrix.

Core Concepts: X-A2 Matrices and network.

Link: Webpage to video lesson on matrices

#### 5. Identity Matrix

Description: The web link explains the concept of identity matrix with examples.

Core Concepts: X-A2 Matrices and network.

#### 6. Networks

Description: The web link contains a video that explains conversion of networks into matrices and vice versa.

Core Concepts: X-A2 Matrices and network.

Link: Webpage to video lesson on networks

#### 7. Sequence and Series

Description: Explains about A.P,G.P, Arithmetic Mean and Geometric Mean.

Core Concepts: X-A4 Sequence and series.

Link: Video on Arithmetic and geometric sequences

#### 8. Convert from Slope Intercept Form to Standard Form

Description: This web link contains a video lesson on converting of slope intercept form to standard form.

Core Concepts: X-B1 Forms of linear functions.

Link: Video on how to convert slope-intercept form to standard form

#### 9. What are Functions?

Description: This web link contains a video lesson explaining the basic concept of functions.

Core Concepts: X-B1 Functions.

Link:  Video on introduction to functions

#### 10. Graphing Linear Inequalities

Description: This web links contain video lessons on graphing linear inequalities.

Core Concepts: X-B1 Graphing linear inequalities.

Link: Video on graphing linear inequalities

#### 11. Solving System of Linear Equations

Description: The web link contains a video demonstrating the solving system of linear equations using all three methods.

Core Concepts: X-B2 Solving system of linear equations.

Link: Video lesson on solutions to systems of linear equations

#### 12. Graphing Quadratic Function in Vertex Form

Description: The web link contains a video on graphing quadratic functions in vertex form.

Core Concepts: X-B3 Construct and analyze graphing functions.

#### 13. Calculating Roots from Quadratic Graph

Description: The web link contains a video on calculating roots of a quadratic equation from its corresponding graph.

Core Concepts: X-B3 Construct and analyze graphing functions.

#### 14. Solving Non-Linear Equations by Factoring using Different Strategy

Description: This web link contains a video lesson on solving non-linear equations by factoring in different strategy.

Core Concepts: X-B4 Solving non-linear equations.

#### 15. Factoring Trinomials using Sum and Product Rule

Description: This web link contains a video lesson on solving non-linear equations using sum and product methods.

Core Concepts: X-B4 Solving non-linear equations.

#### 16. Solving Non-Linear Equations

Description: This web link contains a video lesson from Bhutan e-Library on solving non-linear equations.

Core Concepts: X-B4 Solving non-linear equations.

Link: Video lesson on solving non-linear equations

#### 17. Surface Area of Cylinder

Description: Derivation of surface area of cylinder.

Core Concepts: X-C1 Surface area of cylinder.

Link: Video Lesson on surface area of a cylinder

#### 18. Surface Area of Sphere

Description: Derives the formula of surface area of sphere by relating it with the surface area of the cylinder. Derivation of formula of total surface area of sphere.

Core Concepts: X-C1 Surface area of sphere.

#### 19. Surface area of Pyramids and Cones

Description: The two video links show the calculation of surface area for the 3-d shapes: cone and pyramid and how to calculate slant height.

Core Concepts: X-C1 Surface area of cones and pyramids.

#### 20. Volume on Prisms, Cylinders, Cones and Spheres

Description: This video explains about the volume of prisms, cylinders, cones and spheres.

Core Concepts: X-C2 volume of 3-D shapes.

Link: Video on volume of prisms, cylinders, cones and spheres

#### 21. 3-D Efficiency

Description: The web link contains a video on 3D efficiency.

Core Concepts: X-C3 Explore, solve and apply properties.

Description: Derives the relation between pie radians = 180 degrees and defines radian.

Core Concepts: X-C4 Derivation of relation: pi radians = 180 degrees.

#### 23. Worksheet for Practicing the Conversion

Description: Worksheet for practice in converting degrees to radians and vice versa.

Core Concepts: X-C4 Converting radians to degrees and vice versa worksheet.

#### 24. Sign Conventions of T-Functions

Description: Convention of signs. Explains signs of trigonometric functions based on the x and y coordinates.

Core Concepts: X-C4 Signs of trigonometric functions.

#### 25. T-Ratios of Standard Angles

Description: Illustration on determining the t-ratios of standard angles. Presents how the t-ratios of standard angles are derived. Demonstrates the application of values of t-ratios of standard angle in problem solving.

Core Concepts: X-C4 T-ratios of standard angles.

#### 26. T-Ratios of ALLIED Angles

Description: Explains about allied angles of T-functions.

Core Concepts: X-C4 T-ratios of allied angles.

#### 27. Application of T-Ratios of Allied Angles in Solving Problems

Description: Illustrates the application of t-ratios of allied angles in solving problems.

Core Concepts: X-C4 Applications of t-ratios of allied angles.

#### 28. Worksheet for Table of T-Functions

Description: Table of t-functions and grid paper.

Core Concepts: X-C4 Graphing t-functions.

#### 29. Periods of T-Functions

Description: Defines period and pictorial illustration on how to determine the period from the T-function graph.
Graphs of t-functions illustrated using GeoGebra. Simulation of the trig-function graph.

Core Concepts: X-C4 Periods of T-functions

Description: Activity on period of T-function.

Core Concepts: X-C4 Periods of T-functions

#### 30. Trigonometric Identities

Description: Derives the square relations/Pythagorean identities.

Core Concepts: X-C4 Trigonometric identities

#### 31. 2-D Reflectional Symmetry

Description: The web link explains the concept of 2-D reflectional symmetry.

Core Concepts: X-D1 Symmetry.

#### 32. 3-D Reflectional Symmetry

Description: The web link explains the concept of 3-D reflectional symmetry.

Core Concepts: X-D1 Symmetry.

#### 33. 2-D Rotational Symmetry

Description: The web link explains the 2-D rotational symmetry with animation.

Core Concepts: X-D1 Symmetry.

#### 34. 3-D Rotational Symmetry

Description: The web link explains the 3-D rotational symmetry with animation.

Core Concepts: X-D1 Symmetry.

#### 35. Comparing Reflectional and Rotational Symmetry

Description: The web link contains an explanation on comparing rotational and reflectional symmetry.

Core Concepts: X-D1 Symmetry.

#### 36. How to Construct Circumcircle and Incircle

Description: This web link contains a video tutorial on construction of circumcircle and incircle.

Core Concepts: X-D2 Circumcircle and Incircle.

#### 37. Incenter, Circumcenter, Orthocenter & Centroid of a Triangle

Description: This web link contains a video link on construction of all the centers of a triangle: circumcenter, incenter, orthocenter and centroid.

Core Concepts: X-D2 Orthocenter and centroid.

#### 38. Choosing a Graph

Description: The web link contains concepts on which graph to choose.

Core Concepts: X-E1 Collecting, displaying and analyzing data.

#### 39. Creating Histogram

Description: The web link explains the process of creating histogram.

Core Concepts: X-E1 Collecting, displaying and analyzing data.

#### 40. Stem and Leaf Plot

Description: The web link explains the process of creating stem and leaf plot.

Core Concepts: X-E1 Collecting, displaying and analyzing data.

#### 41. Box Plot

Description: The web link explains the process of creating box plot.

Core Concepts: X-E1 Collecting, displaying and analyzing data.

#### 42. Normal Distribution

Description: The web link demonstrates real life situations of normal distribution.

Core Concepts: X-E1 Collecting, displaying and analyzing data.

#### 43. Data Involving Two Variables

Description: The web link demonstrates real life situations of normal distribution.

Core Concepts: X-E2 Data Involving two variables.

#### 44. Probabilities of Dependent and Independent Events

Description: This web link contains a video lesson from Bhutan e-Learning project on probabilities of dependent and independent events.

Core Concepts: X-E2 Probability of dependent and independent events.

#### 45. Conditional Probability

Description: This web link contains a video lesson on conditional probability.

Core Concepts: X-E2 Conditional probability 