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)h. To 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.
