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LESSON NOTE ON JSS3 MATHEMATICS FOR SECOND TERM

 

Mathematics Lesson Notes JSS3 Second  Term

SCHEME OF WORK

Week Two and Three: Simultaneous Linear Equations in one or two Variables

Week Four: Geometry I

Week Five: Geometry II

Week Six: Area of Plane Shapes

Week Seven: Review of first half term’s work and periodic test

Week Eight: Area of plane figures cont’d

Week Nine: Trigonometry

Week Ten: Angles of Elevation and Depression

Week Eleven: Revision

Week Twelve: Examination

 

Mathematics Lesson Note For JSS3  (SecondTerm)

Below are the 2022 complete JSS3 Second Term Mathematics Lesson Note 

Week Two and Three: Simultaneous Linear Equations in one or two Variables

INTRODUCTION:

Consider two linear equations in two variables, x and y, such as

          2x – 3y = 4

          3x + y = 1

Instead of one equation in one unknown, we have here two equations and two unknowns. In order to find a solution for this pair of equations, the unknown numbers x and y have to satisfy both equations. Hence, we call this system or pair of equations or simultaneous equations. We now focus on various methods of solving simultaneous equations. To learn more, click here.

Week Four: Geometry I

INTRODUCTION:

Plane shapes in Mathematics are any closed, flat, 2 – dimensional shapes. A closed shape has a different attribute such as the number of sides and corners. A side is a straight line that makes part of the shape, and a corner where two side meets.

Most of the objects that we encounter can be associated with basic shapes. In geometry now we will learn about the definition of plane figures. But before that let us recall, we know that solid shapes have many surfaces. To learn more, click here.

Week Five: Geometry II

INTRODUCTION:

A scale factor is the ratio of the big shape to the smaller shape.

Area factor is the ratio of the big shape’s area to the smaller shape’s area.

The figure below represents two similar rectangles of different sizes. To learn more, click here.

Week Six: Area of Plane Shapes

INTRODUCTION:

Area of a trapezium

A trapezium is a quadrilateral that has only one pair of parallel sides.

The area of the trapezium is given by the following formula where a and b are the lengths of the parallel sides and his the perpendicular distance between the parallel sides.

A = ½(a + b)hTo learn more, click here.

Week Seven: Review of first half term’s work and periodic test

This week, we would be doing a revision of all that we learned, in the first half of the term.

Week Eight: Area of plane figures cont’d

INTRODUCTION:

Week Nine: Trigonometry

INTRODUCTION:

The sine (abbreviated “sin“) and cosine (“cos“) are the two most prominent trigonometric functions. All other trig functions can be expressed in terms of them. In fact, the sine and cosine functions are closely related and can be expressed in terms of each other.

Definition 1 is the simplest and most intuitive definition of the sine and cosine functions. The sine definition basically says that, on a right triangle, the following measurements are related: To learn more, click here.

Week Ten: Angles of Elevation and Depression

Week Eleven: Revision

This week, we would be doing a revision of all that we learned during the term.

Week Twelve: Examination

Afterwards, we would write an examination, which would test our knowledge of what has been taught so far.

 

 

 

 

 

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