Secondary 1 to 4
YourChildCanGoFrom
F9toA1.
Struggling with Maths now doesn't mean struggling forever.
E-Math & A-Math specialist (Sec 1–4)
Small group, 1-to-1 & online programmes
WhatsApp support between lessons
Patient, clear and highly effective. Improved from F9 to A2!
Anderson Secondary School
Testimonials
What Students and Parents Are Saying
Nan Hua High School
E-Math and A-Math C6 to A1 · 2.5 years
"I can't express enough how grateful I am for all the effort and long hours you've put into teaching me over the past three years. You actually made me take an interest in math — I would've never expected that back when I was in Sec 2. Math has become my best subject. Mr Lee is very diligent and patient. He allowed my E and A Math to improve from C6s to A1s by meticulously breaking down complex topics into easily understandable info."
— Student
Anderson Secondary School
E-Math D7 to A1 and A-Math F9 to A2 · 1 year
"Very efficient in getting to the root of the student's problem and targeting weakness in certain topics, providing excellent notes in said topics. Very patient throughout the process and makes lessons interesting to engross the student and feel more comfortable in approaching math problems."
— Student
Hwa Chong Institution
E-Math and A-Math C6 to A1 · 1 year
"Mr Lee is the perfect example of an exemplary educator — not just a teacher, but a friend. He never forgets to be accommodating to each student's skill level, adjusting content and teaching speed to perfect their progress. He never hesitates to offer assistance, even late at night during exam season. This helped me achieve A1s in both E-Math and A-Math."
— Student
Nan Hua High School
E-Math and A-Math C6 to A1 · 2.5 years
"I can't express enough how grateful I am for all the effort and long hours you've put into teaching me over the past three years. You actually made me take an interest in math — I would've never expected that back when I was in Sec 2. Math has become my best subject. Mr Lee is very diligent and patient. He allowed my E and A Math to improve from C6s to A1s by meticulously breaking down complex topics into easily understandable info."
— Student
Anderson Secondary School
E-Math D7 to A1 and A-Math F9 to A2 · 1 year
"Very efficient in getting to the root of the student's problem and targeting weakness in certain topics, providing excellent notes in said topics. Very patient throughout the process and makes lessons interesting to engross the student and feel more comfortable in approaching math problems."
— Student
Hwa Chong Institution
E-Math and A-Math C6 to A1 · 1 year
"Mr Lee is the perfect example of an exemplary educator — not just a teacher, but a friend. He never forgets to be accommodating to each student's skill level, adjusting content and teaching speed to perfect their progress. He never hesitates to offer assistance, even late at night during exam season. This helped me achieve A1s in both E-Math and A-Math."
— Student
Kranji Secondary School
Parent ReviewE-Math B4 to A1 · 1 year
"Keith is an engaging math tuition teacher who truly excels in connecting with students. His ability to explain complex mathematical concepts in a relatable way was impressive. My boy is able to grasp the material more effectively under his guidance. What stood out most was his willingness to assist with any questions, even outside of lessons, via WhatsApp. This teacher's dedication and teaching style made my boy's learning experience enjoyable and effective."
— Parent
Orchid Park Secondary School
Parent ReviewE-Math F9 to B3 · 5 months
"Keith is always giving clear instructions, explaining them in a way that my child can easily understand. He has a knack for simplifying difficult topics and making them more relatable and interesting. He encourages critical thinking and develops problem solving skills. He is also very polite, sincere, punctual and friendly. Overall, we are very satisfied as he has made a positive impact on my child's learning journey. Keep up the good work, Keith!"
— Parent
Unity Secondary School
A-Math D7 to B3, E-Math kept at A2 · 7 months
"I have never really liked Math, but Mr Keith made it more interesting. Thanks for believing in me when nobody did. He brought my A-Math from a D7 to a B3 and kept my E-Math at an A2 in just 7 months. His teaching is easy to understand, his methods are easy to grasp and he replies promptly to messages. He is an amazing teacher and the reason I did well for O Levels."
— Student
Why Parents Choose
Cerebral Maths Tuition
Concept-First Approach
Keith teaches students to notice how they think through a problem, not just which steps to copy — so they can tackle questions they've never seen before.
Structured Methodology
Every student follows the Cerebral Roadmap, a clear map of their Maths journey.
Confidence Development
Keith nurtures strong independent thinkers who enjoy learning by helping them experience as many Maths eureka moments as possible.
Support Beyond Class
24/7 WhatsApp access to Keith for questions outside lesson time.
Proven Track Record
Students have improved significantly under Keith, some within months. The results speak for themselves.
Programmes
Programmes Tailored
For Every Student
Small Group Tuition
Sec 1 to 4 · O Level
E-Math & A-Math
Max 5 students · 2h per class
Online Group Tuition
Sec 1 to 4 · O & N Level
E-Math & A-Math
2h per class
1-to-1 Tuition
Sec 1 to 4 · O, N & IP
E-Math & A-Math
Fully personalised
Enquire for a tailored quote
Monthly group fees are based on 4 lessons per month. Months with 5 lessons are pro-rated according to the calendar.
About Keith Lee
Maths Specialist.
Keith starts with a question that matters more than any formula: how is this student actually thinking about the problem? Once he understands how a student sees numbers and equations, he helps them reshape those mental habits — so Maths stops feeling like guesswork and starts to click. That focus on how the mind works is the idea behind the name Cerebral.
13+ Years of Teaching Experience
MOE Contract Teacher (Secondary) & GEP Primary Educator
Maths Textbook Content Editor & e-Learning Video Producer (2016-2022)
B.Sc. Mathematics, National University of Singapore
PSLE: A* in Maths | O Levels: A1 in E-Math & A-Math | A Levels: A in H2 Math
Your Child's Growth Starts Here
Ready to turn things around?
No hard sell. Just an honest conversation about where your child is and what it will take to improve.
Most parents leave the first session with a clear picture — and a plan.
Limited slots available for Sec 3 and 4.
The fastest way to reach Keith:
WhatsApp Keith NowPrefer to leave your details instead?
