# JS3 Mathematics 2nd Term

## JSS3 Mathematics 2nd Term Lesson Note and Scheme of Work

### SIMPLE EQUATIONS INVOLVING FRACTIONS | JS3 Mathematics 2nd Term

I. Solving simple equations with fractions II. Word problems leading to fractions III. Word problems leading to equations with fractions

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### SIMULTANEOUS LINEAR EQUATIONS | JS3 Mathematics 2nd Term

I. Concept of simultaneous equations II. Preparing table of values for variables III. Graphical approach to the solution of simultaneous equations

### SOLUTION OF SIMULTANEOUS LINEAR EQUATIONSÂ | JS3 Mathematics 2nd Term

I. Method by substitution II. Method by elimination

### SIMILAR FIGURES AND ENLARGEMENT

I. Concept of similar figures II. Examples of similar figures III. Enlargement and scale factor
Concept of similar figures
Two figures are similar, if they look alike and one is an enlargement or reduction of the other. Mathematically, if two shapes are similar, the ratio of their corresponding sides should be constant.

### USE OF SCALE FACTOR IN CALCULATING LENGHTS, AREAS, AND VOLUMES OF SIMILAR FIGURES

I. Scale factor (length ratio) II. Area of similar shapes III. Volume of similar shapes IV. Applications of trigonometric ratios to finding distances and lengths
What is scale a scale factor?
When two shapes are similar, the ratio of their corresponding sides are the same. This ratio is called scale factor or length ratio

### TRIGONOMETRY

I. The trigonometric ratios II. Using sine and cosine tables III. Applications of sine and cosine IV. The tangent of an acute angle.
What is trigonometry?
Trigonometry is a word derived from two Greek words, trigonon meaning “triangle” and metron meaning “measure”. Trigonometry helps us find angles and distances. Trigonometry can be used to find missing angle and distance in a triangle as explained in this trigonometry examples.

## Take a Quiz for JS3 Mathematics 2nd Term

Efforts and courage are not enough without purpose and direction. John F. Kennedy, 35th US president
Educationâ€™s purpose is to replace an empty mind with an open one. Malcolm Forbes, entrepreneur
If you donâ€™t sacrifice for what you want, what you want becomes the sacrifice. Unknown

1. Find the LCM of 24pq and 16p2q. JSCE 2017 Q30 Ogun State

2. Calculate one-third of the sum of 23 and the square of 5. JSCE 2018 Q28 Ogun State

3. The number of minutes in 2Â½ hours is — JSCE 2018 Q1 Ogun State

4. Which of the following is NOT equivalent to Â½? JSCE 2018 Q2 Ogun State

5. Simplify 8 – (-2) – (-1) JSCE 2016 Q2 Ogun State

Question 1 of 5

### AREAS OF PLANE FIGURES

I. Area of basic shapes: Revision (triangles, rectangles, trapeziums, parallelogram and circles) II. Using trigonometry in area problems III. Area of circles and sectors IV. Land measurement

### CONSTRUCTION

I. Bisection of a segment Bisection of an angle II. Construction of special angles (90Â°, 45Â°) III. Construction of special angles (60Â°, 30Â°) IV. Construction of shapes V. Copying given angles

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