S3 maths tutoring: what S3 maths covers and how parents can help
The main content of S3 maths, where students most often get stuck, what parents can do at home, and what tutoring costs.
What does S3 maths cover?
- Number and algebra basics數與代數基礎（中一至中二）
- Geometry and data basics幾何與數據基礎（中一至中二）
- Indices and scientific notation整數指數律與科學記數法
- Percentages百分法
- Polynomials and factorisation多項式與因式分解
- Linear inequalities in one unknown一元一次不等式
- Surds根式
- Similar triangles相似三角形
- Quadrilaterals and centres of triangles四邊形與三角形的心
- Coordinates直角坐標系
- Trigonometry三角學（直角三角形）
- Arcs, sectors and mensuration弧長、扇形面積與求積法
- Measures of central tendency集中趨勢的度量
- Probability概率
Where students most often get stuck
- Factorisation and the laws of indices are the base for S4; weakness here makes S4 hard work.
- Similar triangles and trigonometry: draw a diagram first, then match corresponding sides and angles.
- Percentage problems: the formulas for successive changes and compound interest are easy to misuse.
How can parents help at home?
- Go back over mistakes once a week, rather than only doing new questions.
- Encourage your child to write a reason for every step in geometry.
- In the summer after S3, revise the S1 to S3 basics: they appear in DSE Section A.
How much does S3 maths tutoring cost?
Typical private tutoring rates are about $160–200 (university students) to 450+ (serving teachers) an hour (that platform's published 2026 fee guide). Group classes at tutoring centres usually cost less per student. Before signing up, see the five questions in the maths tutoring guide.
Learn maths at home with Sprout
Sprout is the online maths teacher at Sprout Classroom. No travel and no sign-up: open the page and start.
- A few minutes per lesson: one step at a time. Understand it first, then practise.
- Instant feedback: a wrong answer shows the reason and the correct steps straight away, and the question comes back at the end of the lesson.
- A little every day: streaks, XP and badges help students build a daily habit.
- Peace of mind for parents: no personal details, no ads, and progress is stored only on your device.
Learn mode is open for S4 now, with other levels coming later. Key points and worked examples for every S3 to S6 topic are free to read in DSE maths topics.
Frequently asked questions
Does a S3 student need a tutor?
Not every student does. If your child can finish homework and understands their own mistakes, short daily practice is enough. If they lose marks on the same kind of question in several tests in a row, it is worth getting help, or first using free online practice to find the weak spots.
Does Sprout have a S3 course?
The S3 course is being prepared. Learn mode is open for P1 to P6 and S4 now, and key points and examples for Form 3 maths topics are free to read.