Plans
Curriculum of S.3
Chapter 1 Linear Equations in Two Unknowns
| Topics |
Objective |
1.1 Linear Equations in Two Unknowns and Their Graphs |
• Recognize that a linear equation in two unknowns has an infinite number of solutions.
• Plot and explore the graphs of linear equations in two unknowns. |
1.2 Simultaneous Linear Equations in Two Unknowns and Their Solutions
A Graphical Method
B Algebraic Methods
C Some Special Simultaneous Linear Equations in Two Unknowns |
• Understand the concept of simultaneous linear equations in two unknowns.
• Learn how to solve simultaneous equations in two unknowns by graphical method.
• Learn how to solve simultaneous equations in two unknowns by algebraic methods - the method of substitution and the method of elimination.
• Learn some special simultaneous equations in two unknowns. |
Chapter 2 More about Percentages
| Topics |
Objective |
2.1 More about Percentage Increase and Decrease
A Percentage Change
B Successive Percentage Increase
C Successive Percentage Decrease
D Further Applications of Percentages |
• Learn the formula for percentage change.
• Apply percentages to solve problems involving successive changes, growth and depreciation.
• Apply percentages to solve further practical problems involving component changes. |
2.2 Interest
A Simple Interest
B Compound Interest |
• Understand the concepts of simple interest and compound interest.
• Apply percentages to solve problems involving simple interest and compound interest. |
2.3 Taxation
A Rates
B Property Tax
C Profits Tax
D Salaries Tax |
• Understand different types of taxation in Hong Kong, including rates, property tax, profits tax and salaries tax. |
Chapter 3 Coordinate Geometry of Straight Lines (I)
| Topics |
Objective |
3.1 Distance between Any Two Points on a Plane |
• Understand and apply the distance formula to find the distance between any two points on a plane. |
3.2 Slope of a Straight Line
A Slope
B Inclination |
• Understand the concept of the slope of a straight line on a coordinate plane.
• Realize and apply the formula of slope. |
3.3 Parallel and Perpendicular Lines
A Parallel Lines
B Perpendicular Lines |
• Realize the conditions for two straight lines to be parallel or perpendicular on a coordinate plane.
• Use the relationship between the slopes of a pair of parallel lines or perpendicular lines to solve some geometrical problems. |
Chapter 4 More about Deductive Geometry
| Topics |
Objective |
4.1 Important Lines in a Triangle |
• Realize the important lines in a triangle, including angle bisector, median, altitude and perpendicular bisector.
• Use the definition of the important lines in a triangle to perform proofs. |
4.2 Relationship among the Lines in a Triangle
A Relationship among the Three Sides of a Triangle
B Centres of a Triangle
C Construction of Centres of a Triangle by Compasses and Straight Edge |
• Explore and realize the following relationship among the lines in a triangle:
(a) Triangle inequality
(b) The three angle bisectors, medians, altitudes and perpendicular bisectors in a triangle intersect at a point respectively.
• Explore and realize the properties of centres of a triangle, including incentre, centroid, orthocentre and circumcentre.
• Construct the centres of a triangle by compasses and straight edge. |
Chapter 5 Quadrilaterals
| Topics |
Objective |
5.1 Quadrilaterals |
• Realize the definition of quadrilaterals and the related terminology and properties. |
5.2 Parallelograms
A Properties of Parallelograms
B Identifying Parallelograms |
• Investigate the properties of parallelograms.
• Apply the properties of parallelograms to solve problems.
• Realize the conditions for parallelograms, and learn to identify parallelograms. |
5.3 Rectangles, Squares, Rhombuses and Trapeziums
A Rectangles
B Squares
C Rhombuses
D Trapeziums |
• Realize the properties of some special quadrilaterals, including rectangles, squares, rhombuses and trapeziums.
• Apply the properties of rectangles, squares, rhombuses and trapeziums to solve problems. |
5.4 Simple Proofs Related to Parallelograms |
• Apply the properties of different kinds of parallelograms to perform simple proofs. |
5.5 Mid-point Theorem |
• Realize the mid-point theorem and apply it to solve problems. |
5.6 Intercept Theorem |
• Realize the intercept theorem and apply it to solve problems. |
Chapter 6 More About 3-D Figures
| Topics |
Objective |
6.1 Symmetries of Solids
A Reflectional and Rotational Symmetries of Solids
B Symmetries of Regular Polyhedra |
• Understand the concepts of reflectional and rotational symmetries of solids.
• Realize the reflectional and rotational symmetries of cubes and regular tetrahedra.
• Explore the reflectional and rotational symmetries of other regular polyhedra. |
6.2 Nets of Solids |
• Understand and learn to design a net for a solid.
• Realize the relationships among the vertices and the faces of a solid formed by a net. |
6.3 2-D Representations of Solids
A Orthographic Views of Solids
B Identifying Solids from their Orthographic Views |
• Understand the limitations of a 2-D representation.
• Learn to draw the orthographic views of a solid and understand the related concepts.
• Sketch the solid according to its orthographic views.
• Draw the solid on the isometric grid according to its orthographic views. |
6.4 Points, Lines and Planes in Solids
A Relationships between Lines and Planes
B Relationships between Two Planes |
• Understand the concept of the projection of a point or a line segment on a plane.
• Learn to identify the angle between a line and a plane.
• Learn to identify the angle between two planes.
• Solve practical problems involving lines and planes in a solid. |
6.5 More about Solids
A Euler's Formula
B Duality of Regular Polyhedra |
• Realize the Euler's formula.
• Explore the duality of regular polyhedra. |
Chapter 7 Areas and Volumes (III)
| Topics |
Objective |
7.1 Pyramids
A Volume of Pyramids
B Total Surface Area of Pyramids |
• Learn the names of different parts of a pyramid.
• Learn the properties of right pyramids and regular pyramids.
• Understand and learn how to use formulae to calculate the volume and the total surface area of a pyramid.
• Learn the definition of a frustum of pyramid. |
7.2 Circular Cones
A Volume of Right Circular Cones
B Total Surface Area of Right Circular Cones |
• Learn the names of different parts of a cylinder.
• Understand and learn how to use formulae to calculate the volume and the total surface area of a cylinder. |
7.3 Spheres
A Volume of Spheres
B Surface Area of Spheres |
• Learn the names of different parts of a sphere.
• Understand and learn how to use formulae to calculate the volume and the surface area of a sphere. |
7.4 Formulae for Lengths, Areas and Volumes |
• Learn how to distinguish the formulae for lengths, areas and volumes. |
7.5 Similar Figures |
• Explore the relationship between lengths and areas of similar plane figures.
• Explore the relationship between lengths, areas and volumes of similar solids.
• Understand and learn how to use the relationship between lengths, areas and volumes of similar figures to do calculation. |
Chapter 8 Trigonometric Relations
| Topics |
Objective |
8.1 Trigonometric Ratios of Special Angles |
• Explore the exact trigonometric ratios of the special angles 30°, 45° and 60°. |
8.2 Finding Trigonometric Ratios by Constructing Right-Angled Triangles |
• Learn how to construct a right-angled triangle from a given trigonometric ratio, so as to find the other two trigonometric ratios. |
8.3 Trigonometric Identities
A Basic Trigonometric Identities
B Trigonometric Ratios of Complementary Angles
C Proof of Simple Trigonometric Identities |
• Explore the basic trigonometric identities, and use them to simplify expressions.
• Learn how to use trigonometric identities to find the other two trigonometric ratios from a given trigonometric ratio.
• Explore the trigonometric identities for complementary angles, and use them to simplify expressions.
• Learn how to use trigonometric identities to solve trigonometric equations.
• Learn how to prove simple trigonometric identities. |
Chapter 9 Applications of Trigonometry
| Topics |
Objective |
9.1 Simple Practical Applications of Trigonometry |
• Learn how to apply trigonometric ratios to solve simple problems |
9.2 Applications of Trigonometry to Rectilinear Figures |
• Learn how to apply trigonometric ratios to solve problems on rectilinear figures. |
9.3 Gradients
A Gradient of a Road
B Finding Gradient from a Map |
• Learn the concept of gradient of a road.
• Learn how to find gradients from a map.
• Learn how to solve daily-life problems on gradients. |
9.4 Angles of Elevation and Depression |
• Learn the concepts of angles of elevation and depression.
• Learn how to solve problems on angles of elevation and depression |
9.5 Bearings
A Simple Bearings
B Problems Involving Bearings |
• Learn the concepts of two kinds of bearings, which are true bearing and compass bearing.
• Learn how to solve problems on bearings. |
Chapter 10 Coordinate Geometry of Straight Lines (II)
| Topics |
Objective |
10.1 Point of Division
A Mid-point
B Internal Point of Division (NF) |
• Learn the mid-point formula.
• Learn the section formula for internal division. |
10.2 Using Analytic Approach to Prove Results Relating to Rectilinear Figures (NF) |
• Learn to use the analytic approach to prove results relating to rectilinear figures.
• Learn to choose between the analytic approach and the deductive approach in performing proofs. |
Chapter 11 Measures of Central Tendency
| Topics |
Objective |
11.1 Introduction to General Tendency |
• Learn the concept of central tendency.
• Learn that averages are used to reflect the central tendency of data sets. |
11.2 Arithmetic Means
A Arithmetic Means of Ungrouped Data
B Arithmetic Means of Grouped Data |
• Learn the definition of arithmetic mean and its applications.
• Learn to find arithmetic means of ungrouped data from frequency distribution tables.
• Learn to find arithmetic means of grouped data from frequency distribution tables. |
11.3 Medians
A Medians of Ungrouped Data
B Medians of Grouped Data |
• Learn the definition of median and its applications.
• Learn to find medians of data from frequency distribution tables.
• Review how to find medians of data from cumulative frequency polygons/curves. |
11.4 Modes and Modal Classes
A Introduction to Modes
B Modal Classes of Grouped Data |
• Learn the definition of mode/modal class and its applications.
• Learn to find modal classes of grouped data from frequency distribution tables. |
11.5 Comparing Different Types of Averages
A Measuring the Central Tendency with Different Averages
B Comparing Two Sets of Data with Different Types of Averages |
• Compare the characteristics of different averages.
• Learn to choose the appropriate averages in different situations to reflect the central tendency.
• Understand the limitations of using only one average to compare two different groups of data. |
11.6 Misuses of Averages |
• Understand the consequences of the misuses of averages.
• Understand how business people may use averages to mislead customers.
• Learn to determine whether the averages used to reflect central tendency are appropriate |
11.7 Further Investigations on Averages |
• Learn the effects on the averages when the data sets are modified. |
11.8 Weighted Mean |
• Learn the definition of weighted mean.
• Learn to find the weighted means of data sets. |
Chapter 12 Simple Idea of Probability
| Topics |
Objective |
12.1 Probability |
• Learn the basic concept of probability and the definitions of related terms.
• Learn the nature of probability.
• Know the application and calculation of probability in daily life. |
12.2 Further Problems on Probability
A Listing Possible Outcomes by Tree Diagrams or in Tables
B Geometric Probability |
• Learn to use tree diagrams and tables to solve further problems on probability.
• Learn to use the counting principle to find the total number of possible outcomes.
• Learn the idea of geometric probability. |
12.3 Experimental Probability |
• Learn that the probability introduced previously is the theoretical probability.
• Learn the meaning of experimental probability and how to find it.
• Understand the difference and relationship between theoretical probability and experimental probability. |
12.4 Expected Value |
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